The one-piece Racing Diablo II AR suit is a tool for anyone who wants to experience the devilish power of motorcycle sport. Not only does it look great and perfectly matches all "hellish" machines, but the red and dark silver details also symbolize the passion for speed and adrenaline. Nevertheless, the Racing Diablo II AR is not just about looks, it has a perfectly thought-out cut that ensures comfort even during long and intense rides. Obviously, it includes the patented reinforced 4SR seam, which ensures that in the event of a fall, your own skin stays intact. With perfect ventilation, you won’t feel like you're on fire even when riding the city streets.

AR suits from 4SR are fully compatible with various airbag systems, this is made possible by the connecting flex panels in the back and hip areas and a visible LED indicator on the forearm. And the best part? The quality of materials and stitching is exactly the same as what 4SR riders use in world championship races. If you take motorcycling seriously, the Racing Diablo II AR is the suit of choice that will protect you on every road!

"WE DON’T PRODUCE BASIC, CHEAP STRIPPED-DOWN MODEL LINE SUITS"

Top quality for all riders = 4SR FAIR PLAY

With a one-piece 4SR suit, you’ll be geared up for the track in minutes. The price includes not only sliders and standard protectors, but also a chest and back protector, dual hip and tailbone protectors – all from reputable brands. 4SR suits include a system of 18 ergonomically placed protectors – the highest number of protectors in a mass-produced suit ever.

The one-piece Racing Diablo AR Airbag Ready® suit is equipped with a hollow hump that can hold a camelbag. Its shape and the design of the suit’s back side are ideal for customization. If you’d like to personalize your suit with custom leather logos — including your name, racing number, or sponsor branding — get in touch with us at sales@4sr-leathers.com.au. We’re here to make it yours!

If you’ve ever experienced the problem of an unzipped suit sliding below your butt when walking around the paddock – we’ve solved this for you. One-piece suits have a small snap button on the inner side of the main zipper flap to hold the zipper pull in place.

          YOU CAN SCRAPE YOUR ELBOW WHILE LEANING        

The suit is equipped with Elbow down TECH elbow sliders. These are available in several colors. This suit includes 1 pair of red sliders, and more can be purchased separately.

Every ride starts with the right choice. However, safety is not a choice – it’s self-respect.

RESPECT YOURSELF, CHOOSE QUALITY!

Standard equipment of the Racing Diablo II Airbag Ready® suit includes:

• Class AAA according to EN 17092:2020, the highest level of protection
• 1.2 mm thick cowhide leather / black, anthracite grey, red /
• 4SR Elbow down TECH – replaceable elbow sliders
• Pre-curved shoulders and carefully cut sleeves allow perfect riding posture
• Top-quality Betac protectors on shoulders, elbows, and knees certified to EN 1621-1:2012
• YKK & OPTI zippers
• Full perforation of front panels, localized perforation on arms, sides, and thighs
• 3D lining
• Extensive aramid stretch for maximum mobility
• Flexible leather panels without restrictive seams
• Hollow aerodynamic hump suitable for a hydrobag
• Use of triple seams; in high-stress areas, patented 4x stitched 4SR safety seam is used
• Sleeve cuffs made of soft aramid stretch
• Comfort-designed collar
• Includes chest and back protector (both must be removed when using an airbag system!)
• Includes knee sliders
• Airbag system not included
• AR suit is compatible with In&motion and Alpinestars Tech-Air® airbag systems
• Suit can be optionally fitted with an airbag data cable and LED indicators
• AR Airbag Ready® is a registered trademark with the Industrial Property Office of the Czech Republic

What does 4SR offer that others don’t?

• Suit is fully equipped with race-grade protectors, including chest and back protectors
• Aramid stretch in armpits and crotch is seamless
• Hidden pocket inside the suit for a LapTimer
• When the zipper snap is fastened, an unzipped suit won’t slide below the butt
• High-wear zones are joined by patented double seam 4SR, stitched 4x!
• 4SR suits have double-layer leather on elbows, shoulders, hips, and seat area
• 4SR leather has been tested by Eurofins Textile Testing Spain and certified to EN 17092:2020, receiving the AAA safety rating

Got questions? Contact us.

4SR - Racing Inferno Airbag Ready Motorcycle Suit 

Ultimate Protection & Performance

The 4SR Racing Inferno AR one-piece motorcycle suit is engineered for riders who demand uncompromising safety, comfort, and performance.

Crafted from premium 1.2mm cowhide leather, it integrates 21 strategically placed protectors, ensuring maximum impact resistance.

Designed to be Airbag Ready, it seamlessly pairs with leading In&Motion airbag systems like Alpinestars Tech-Air® for enhanced protection.

This suit is packed with high-performance features, including removable chest and back protectors, durable knee and elbow sliders, and double-layered leather reinforcement in high-impact areas (shoulders, elbows, hips, and seat).

Kevlar stretch panels enhance flexibility, while the aerodynamic hollow hump accommodates a Camelbag, keeping you hydrated during intense rides.

Key Features:

• Premium 1.2mm cowhide leather in yellow, fluorescent red, white, and black
• Airbag Ready – Compatible with In&Motion, Alpinestars Tech-Air®
• High-spec Betac protectors (EN 1621-1: 2012 certified) on shoulders, elbows, and knees
• Replaceable elbow sliders – Available in multiple colours
• Kevlar stretch panels – Maximum flexibility & mobility
• Pre-curved sleeves – Optimal riding position for precision control
• 3D mesh lining – Enhanced breathability & temperature regulation
• Seamless stretch panels – Unrestricted movement in the crotch & armpits
• YKK & OPTI zippers – Reliable, smooth operation
• Double 4SR seam stitching – Reinforced durability at high-stress points
• Reflective logos – Increased visibility in low-light conditions

Additional Benefits:

• Zipper Lock System – Keeps the upper part of the suit secure between track sessions
• Aerodynamic hollow hump – Designed to accommodate a Camelbag hydration system
• Certified by TÜV Rheinland® – Proven 11.2-second abrasion resistance in rigorous tests

Trusted by professional racers worldwide, the 4SR Racing Inferno AR is the perfect fusion of safety, comfort, and high-speed performance.

Take your riding experience to the next level with gear designed for champions.

Got questions? Contact us.

The 4SR Racing Blue AR motorcycle suit offers unmatched safety, comfort, and quality. Crafted from 1.2mm thick cowhide leather, it features 21 ergonomically placed protectors for the highest level of protection. The suit is Airbag Ready, ensuring you can pair it with leading airbag systems to enhance your safety even further.

This one-piece suit includes knee and elbow sliders, internal protectors, and removable chest and back protectors from trusted brands. Double-layered leather on impact zones (elbows, shoulders, hips, and seat) and Kevlar stretch panels provide extra durability and mobility. The hollow aerodynamic hump is designed to fit a Camelbag, ensuring hydration during long rides.

Key Features:

• 1.2mm thick cowhide leather in blue, fluorescent red, white, and black
• Airbag Ready, compatible with In & Motion, Alpinestars Tech-Air®
• Betac high-specification protectors on shoulders, elbows, and knees (EN 1621-1: 2012 certified)
• Replaceable elbow sliders available in various colours
• Kevlar stretch panels for maximum flexibility
• Pre-curved sleeves for optimal riding position
• 3D mesh lining for enhanced breathability
• Seamless stretch for unrestricted movement in the crotch and armpits
• YKK & OPTI zips for reliability
• Double 4SR seam at high-stress points
• Reflective logos for increased visibility

Additional Benefits:

• Zipper Lock System to keep the upper part of the suit out of the way between track sessions
• Hollow hump to accommodate a Camelbag hydration pack
• Tested and certified by TÜVRheinland®, withstanding 11.2 seconds in abrasion resistance tests

Invest in the 4SR Racing Blue AR suit to experience top-tier safety, comfort, and racing performance, trusted by professional racers around the world.

Got questions? Contact us.

Feel the Lightness. Experience the Speed.
The Racing Ultra-Light Grey AR by 4SR is the lightest motorcycle suit in our collection. Engineered with kangaroo leather, it's not only built for speed but also designed for ultimate comfort. Favoured by factory riders for its minimal weight, it helps you stay agile while pushing your limits on the track.

Now Airbag Ready! The suit's accordion stretch panels are designed to work seamlessly with standalone airbags, giving you the flexibility and safety you need on the track. All materials and stitching are crafted to the same high standards as our factory racers' suits, ensuring you get the best in both safety and performance.

Key Features:

• Material: 0.9 mm kangaroo leather / black, fluorescent red, grey /
• Weight: Suit weighs 3.4 kg (5.2 kg with protectors in size 48)
• Protectors: Includes high-quality Betac protectors on shoulders, elbows, and knees, certified to EN 1621-1:2012 standards
• Sliders: Equipped with replaceable 4SR Elbow Down TECH sliders in various colour options (White, Black, Red, Fluorescent Red, Fluorescent Yellow, Green)
• Mobility: Aramid stretch panels in the crotch and armpits for maximum movement
• Comfort: Soft stretch sleeve cuffs and a comfortable collar with reflective logo
• Airbag Compatibility: Compatible with In&motion and Alpinestars Tech-Air® airbag systems (Airbag system not included)
• Extra Features: Hollow aerodynamic hump compatible with the 4SR Hydrobag, 3D bubble mesh lining, maximum perforation in key areas for ventilation, double and triple seams for added durability

This motorcycle suit has been tested and certified for abrasion resistance by TÜV Rheinland® and exceeds industry safety standards, including Level 2 and AAA certification. Ride with confidence in the best gear, made the same way we prepare our factory racing suits.

Got questions? Contact us.

A high-performance motorcycle suit designed for serious riders, the 4SR Racing Ultra Light AR is crafted from lightweight kangaroo leather. This suit, favoured by professionals for its reduced weight and superior strength, enhances rider speed and endurance. Now, you too can experience the unparalleled lightness and flexibility offered by our lightest racing suit to date.

Equipped with advanced safety features, this Airbag Ready® suit includes 18 ergonomically placed protectors and is compatible with multiple standalone airbag systems. With accordion stretch panels, pre-curved sleeves, and seamless Aramid stretch for increased movement, it offers superior comfort and freedom during rides.

The Racing Ultra Light AR also features a patented Zipper Lock system, ensuring your suit stays in place during track breaks. Available in a striking black, fluorescent red, and grey colourway, this suit combines style with unbeatable functionality.

Key Features:

• Kangaroo leather (0.9 mm thickness) in black, fluorescent red, and grey
• 18 ergonomically placed protectors including chest and back protection (removable)
• Weight: 3.4 kg (5.2 kg with all protectors)
• Elbow down TECH sliders, replaceable and available in multiple colours
• Offset shoulders and pre-curved sleeves for optimal riding posture
• YKK & OPTI zippers for durability and ease of use
• Maximum perforation in key areas (chest, back, arms, hips) for superior ventilation
• Seamless Aramid stretch panels for improved flexibility and comfort
• Aerodynamic speed hump, designed to fit the 4SR Hydrobag hydration system
• Double and triple seams in stress areas for enhanced durability
• Reflective logos for increased visibility
• Airbag Ready® compatible with In&motion and Alpinestars Tech-Air® systems

Got questions? Contact us.

Are you searching for a premium racing motorcycle suit designed for optimal protection and comfort? The 4SR Racing Camo AR Airbag Ready® suit is the ultimate choice for professional riders. This one-piece race suit is equipped with 18 ergonomically placed protectors and features accordion stretch panels, allowing it to work seamlessly with standalone airbag vests.

The suit is crafted from 1.2mm thick cowhide, offering excellent durability and protection. Its unique design ensures maximum mobility, thanks to Kevlar stretch panels in key areas. The Racing Camo AR suit includes knee and elbow sliders, removable chest and back protectors, and double hip and coccyx protection—all sourced from top-quality brands. You can also wear your chosen airbag vest underneath for added safety.

Key Features:

• Airbag Ready®: Compatible with standalone airbags like the Alpinestars Tech-Air® system.
• 18 Protectors: Includes chest, spine, knee, and elbow protectors for comprehensive protection.
• Comfort Features: Hollow aerodynamic hump to fit a Camelbak rehydration pack, seamless stretch panels for increased mobility, and flexible leather panels for ultimate comfort.
• Durable Construction: 1.2mm thick cowhide with double seams in high-stress areas and a Level 2 TÜVRheinland® safety rating.
• Innovative Design: Offset shoulders, pre-curved sleeves, and a reflective collar logo for added safety on the track.

What sets the 4SR Racing Camo AR apart:

• Zipper lock system to secure the upper part of your suit between sessions.
• Kevlar stretch underarms and crotch area for enhanced flexibility.
• Hidden pocket for a LapTimer.
• Patented double seams for maximum durability.

Take your safety and comfort to the next level with the 4SR Racing Camo AR. Built to meet the demands of professional racers, this suit offers unmatched protection and performance on the track.

Got questions? Contact us.

Are you after a premium racing suit that works perfectly with your standalone airbag vest? The Racing Diablo AR Airbag Ready® leathers offer the ultimate in safety and comfort. Featuring our latest design, this 1-piece suit includes all the safety elements you'd expect from 4SR, plus expanded accordion stretch panels for seamless use with standalone airbag vests.

We've collaborated with professional racers to bring you our safest, most comfortable racing suit yet. The Racing Diablo AR includes 18 ergonomically placed protectors. By removing the 4SR Level 2 back and chest protectors, you can wear your airbag vest underneath—quick, easy, and you're Airbag Ready!

Key Features:

• Accordion stretch panels for multiple airbag vest compatibility.
• 18 ergonomically positioned protectors for maximum safety.
• Zipper Lock system holds your leathers in place between track sessions.
• Includes knee and elbow sliders, internal protectors, removable chest and back protectors, and double hip and coccyx protection.

Added Safety:

• Camelbak-compatible hollow hump for hydration during rides.
• Seamless stretch in the crotch and underarm areas for greater movement and flexibility.
• Flexible, comfortable sleeve cuffs.
• Replaceable Elbow down TECH elbow sliders, available in multiple colours.

This suit also features Betac-certified shoulder, elbow, and knee pads, YKK & OPTI zippers, Kevlar stretch panels, and double seams at stress points for extra durability. Reflective logos and a comfortable collar complete the setup.

Got questions? Contact us.

The 4SR Racing Monster Green AR is designed for riders looking for uncompromising safety and flexibility. Made from 1.2mm thick cowhide leather, this suit comes fully equipped with 18 ergonomically placed protectors for the ultimate protection during high-speed rides. Ready for use with any standalone airbag vest, this Airbag Ready® suit allows you to remove the included 4SR Level 2 back and chest protectors to make space for your chosen airbag system, such as the In & Motion Airbag System or Alpinestars Tech-Air®.

Built with a high-strength accordion stretch panel, the Racing Monster Green AR offers freedom of movement while maintaining durability and safety. It includes standard features like elbow down TECH elbow sliders, chest and back protectors, and double hip and coccyx protection from trusted brands.

Key Features:

• Premium 1.2mm cowhide leather in black, fluorescent green, fluorescent red, and gold
• Equipped with Betac shoulder, elbow, and knee protectors, certified to EN 1621-1: 2012 standards
• High breathability with maximum perforation on the chest and local perforations on the arms, hips, and thighs
• Kevlar stretch panels for maximum mobility in key areas such as the crotch, armpits, and behind the knees
• Aerodynamic speed hump with space for a Camelbak hydration pack
• Comfortable cuffs with soft Kevlar stretch for added flexibility
• YKK & OPTI zippers for durability
• Includes certified chest and spine protectors from Sas-Tec
• Compatible with standalone airbag systems (airbag system not included)

This suit has been tested for abrasion resistance at TÜVRheinland® and passed with flying colors, earning a Level 2 safety label. The double 4SR seams at high-stress points ensure extra durability. Whether you're racing on the track or riding on the road, this suit provides maximum safety and comfort.

What Makes 4SR Different:

• 18 ergonomically placed protectors for superior safety
• Double-layer leather on elbows, shoulders, hips, and seat
• Seamless Kevlar stretch under the armpits and crotch
• Includes a hidden pocket for a LapTimer
• Patented double 4SR seams sewn 4x for durability

Got questions? Contact us.

Are you in need of a high-performance racing suit designed to accommodate your standalone airbag vest? You've found it with the Racing Power AR 1PC Airbag Ready® leather race suit, the safest and most comfortable suit from 4SR to date.

The Power AR suit is loaded with 18 ergonomic protectors, designed in collaboration with professional racers. By removing the 4SR Level 2 back and chest protectors, this suit allows easy integration with your chosen airbag vest. The accordion stretch panels are engineered for superior flexibility and comfort, making it compatible with a wide variety of standalone airbag vests. It’s easy, fast, and you’re officially Airbag Ready!

Built for racing, the Power AR is equipped with knee and elbow sliders, internal protectors, removable chest and back protectors, and more. With 18 strategically placed protectors, it's one of the most protective mass-produced 1PC leather suits available today. And with the addition of 4SR’s Zipper Lock system, you can easily hold up your leathers between sessions for maximum convenience.

Key Features:

• Premium 1.2 mm Cowhide Leather: Available in black, white, and grey for a durable and stylish finish.
• Betac Protectors: High-quality protectors on shoulders, elbows, and knees, certified to EN 1621-1: 2012 standards, providing top-level safety.
• Replaceable 4SR Elbow Down TECH Sliders: Designed for high-performance use with easy replacement.
• Pre-Curved Sleeves and Offset Shoulders: For a natural riding position and enhanced comfort on the track.
• Aerodynamic Hump: Hollow design accommodates a Camelbak hydration system for convenience during long races.
• Durable YKK & OPTI Zippers: Trusted for strength and long-lasting performance.
• Maximized Airflow: Strategic perforations in key areas ensure proper ventilation and cooling while riding.
• Kevlar Stretch Panels: Added to high-movement zones for maximum flexibility and comfort.
• Reinforced Double Seams: Extra stitching in high-stress areas for superior durability and abrasion resistance.
• Certified Chest and Spine Protectors: Built-in, removable protectors offer additional safety without sacrificing comfort.
• Zipper Lock System: A convenient feature to hold the upper half of your leathers between track sessions.

Additional Details:

• Compatible with In & Motion and Alpinestars Tech-Air® airbag systems
• Reflective logo on the collar for added visibility
• Knee sliders included

Note: Airbag system not included.

 Got questions? Contact us.

Looking for a high-quality racing suit to accommodate your airbag vest? The Racing Neon AR 1PC Airbag Ready® leather suit is here. Our latest model comes with all the safety features you expect from 4SR, plus extra accordion stretch panels for comfort and compatibility with any standalone airbag vest.

Developed alongside professional racers, the Neon AR is our safest and most comfortable suit yet. It includes 18 ergonomic protectors. For those using airbags, the 4SR Level 2 back and chest protectors can be removed, letting you wear your airbag vest underneath easily. You’re now Airbag Ready!

Thanks to its unique cut and strategically placed stretch panels, the Racing Neon AR is compatible with multiple airbag systems. Our durable stitching and high-quality materials are the same as those used in our factory race suits.

Included in the price:

• Knee and elbow sliders
• Internal protectors
• Removable chest and back protectors
• Double hip and coccyx protection
• All protectors are sourced from top brands, making this one of the safest mass-produced 1PC leather suits on the market.

"We prepare our production suits the same way we prepare our factory racers' suits!"

Other features include:

• Hollow hump to fit your Camelbak hydration pack
• Seamless stretch in key areas for increased mobility
• Flexible, comfortable material on sleeve cuffs
• Zipper lock to hold your leathers in between track sessions
• Elbow TECH sliders in several colours: Black, Red, Fluorescent Red, Fluorescent Yellow, and Green

Standard Equipment Includes:

• • 1.2 mm thick cowhide in black, fluorescent yellow, and red
  • Betac Shoulder, Elbow, and Knee Pads certified to EN 1621-1: 2012
  • YKK & OPTI zippers
  • Maximum perforation in key areas for breathability
  • 3D mesh lining for comfort
  • Kevlar stretch panels for mobility
  • Aerodynamic hump with Camelbak compatibility
  • Double seams in high-stress areas
  • Kevlar sleeve cuffs and comfortable collar
  • Reflective logos for visibility
  • Includes knee sliders
  • Compatible with multiple airbag systems like In & motion and Alpinestars Tech-Air®

Got questions? Contact us.

For many years, we’ve been crafting women's racing suits, and the RR Lady Power AR suit reflects our commitment to excellence. Designed for female track day riders and racers, this two-piece suit offers unmatched protection, comfort, and mobility.

Our motorcycle suits, often seen at the BSB Championship, are engineered to handle the extreme conditions of superbike competitions. With protectors placed to ensure maximum safety during high-strain falls, you can trust this suit for every race.

"WE MAKE OUR PRODUCTION SUITS IN THE SAME WAY WE PREPARE OUR FACTORY RACERS' SUITS"

Mobility is key for every racer, which is why we’ve used seamless Aramid stretch panels in critical areas like the crotch, underarm, and knee. This allows freedom of movement without compromising safety. The suit is finished with soft fabric cuffs for all-day comfort.

Key Features:

• Made from 1.2 mm cowhide leather in Black, White, and Grey
• Replaceable Elbow Down TECH sliders for enhanced protection
• High-quality Betac protectors on shoulders, elbows, and knees, certified to EN 1621-1:2012 Level 2 standards
• Durable YKK zippers for reliability
• Underarm perforations for improved airflow and comfort
• 3D mesh lining for enhanced breathability
• Extensive Aramid stretch panels for maximum flexibility and freedom of movement
• Improved leather panels on the back for better mobility
• Aerodynamic speed hump, Hydrobag compatible
• Double and triple seams for superior durability in high-stress areas
• Soft stretch cuffs and a comfortable collar for all-day comfort
• Reflective logo on the collar for added visibility in low-light conditions
• Two internal pockets for convenient storage
• Jacket can be worn separately for versatile use
• Includes knee and elbow sliders for added protection
• Optional certified Sas-Tec chest and back protectors available
• Compatible with In&motion® and Alpinestars Tech-Air® airbag systems
• Airbag system not included; consult with us for suitable options
• AR Airbag Ready® is a registered trademark in the Czech Republic

Got questions? Contact us.

Black is timeless, the embodiment of style and elegance. With our tried-and-tested custom suit design tailored to fit the female form, we're thrilled to offer the RR Lady Black Series AR — a full-size, airbag-ready 2-piece suit designed for lady bikers looking to dominate the track.

For years, we've crafted world-class women's racing suits through our custom suit department. Now, with a growing number of female track day riders and racers, we're making these professional-grade suits available to everyone.

Our motorcycle suits, regularly featured at the BSB Championship — one of the most intense superbike competitions — have been engineered to endure maximum strain from frequent falls. We ensure the highest quality Betac protectors are correctly positioned for maximum protection.

"We make our production suits with the same precision as our factory racers' suits."

Rider mobility is crucial, and the RR Lady Black Series AR offers seamless Aramid stretch panels at the crotch, underarms, and the back of the knees, allowing for smooth movement on the bike. For added comfort, we’ve incorporated soft, stretch cuffs and a breathable 3D mesh lining.

Key Features:

• Made from 1.2 mm cowhide leather in Black
• Replaceable Elbow Down TECH sliders for enhanced protection
• High-quality Betac protectors on shoulders, elbows, and knees (EN 1621-1:2012 Level 2 certified)
• Durable YKK zippers for reliability
• Underarm perforations for improved airflow and comfort
• 3D mesh lining for enhanced breathability
• Extensive Aramid stretch panels for maximum flexibility and freedom of movement
• Improved leather panels on the back for better mobility
• Aerodynamic speed hump (Hydrobag compatible)
• Double and triple seams for superior durability in high-stress areas
• Soft stretch cuffs and a comfortable collar for all-day comfort
• Reflective logo on the collar for better visibility in low-light conditions
• Two internal pockets for storage
• Jacket can be worn separately for versatile use
• Includes knee and elbow sliders for added protection
• Optional certified Sas-Tec chest and back protectors available
• Compatible with In&motion® and Alpinestars Tech-Air® airbag systems
• Airbag system not included; consult with us for guidance on suitable options
• AR Airbag Ready® is a registered trademark in the Czech Republic

What Sets 4SR Apart:

• Jacket can attach to Motorcycle jeans
• Perforated sides for improved ventilation
• Seamless Aramid stretch under armpits and crotch for ultimate comfort
• Patented, double 4SR seam sewn 4x for increased durability in areas prone to abrasion
• Two-layer leather on elbows, shoulders, hips, and seating area for added protection
• Leather tested by TÜVRheinland® (EN 13595-2:2002 standard), achieving 11.2 seconds in abrasion resistance — Level 2 certified

Got questions? Contact us.

One suit. Endless possibilities.
From city traffic to the racetrack, the 4SR RR Blue AR 2pc Leather Suit delivers uncompromising safety, comfort, and versatility. Built on the same platform as our professional one-piece race suits, this two-piece design combines premium materials with the convenience of everyday usability.

The RR Blue AR is cut from 1.2 mm thick cowhide leather and engineered for maximum freedom of movement with pre-curved shoulders, sport-cut sleeves, flexible leather panels, and large seamless aramid stretch zones. The suit fits snugly without pulling on the shoulders, letting you naturally settle into the ideal riding position.

Safety comes first with 13 ergonomically placed protectors, including Italian Betac protectors (EN 1621-1:2012 certified) on shoulders, elbows, knees, and shins, plus viscofoam memory padding at hips, collarbones, coccyx, and forearms. Our patented 4x stitched safety seams and double-layer leather at key impact areas set the benchmark for rider protection.

Ventilation is handled by strategic perforation on sides, chest, and thighs, while the 3D mesh lining and comfort collar add breathability on long rides. Slim sleeve cuffs allow easy use with racing gloves.

Ready to push limits? The RR Blue AR includes the Elbow down TECH system, with replaceable elbow sliders (white included, coloured options available). A pair of knee sliders is also supplied.

Airbag Ready® integration means full compatibility with In&motion and Alpinestars Tech-Air® systems, including optional LED control cable for clear forearm status display.

For added versatility, the jacket of the RR Blue AR suit can also be paired with 4SR motorcycle jeans, giving riders a practical option for road use without compromising on safety.

Features:

• CE – EN17092-2:2020 AAA certified two-piece leather suit

• 1.2 mm premium cowhide leather in blue, fluorescent red, and white

• 13 protectors including Betac CE armour & viscofoam memory padding

• Aerodynamic hump

• Strategic perforation for airflow

• Seamless aramid stretch in armpits & crotch

• Flexible leather stretch panels for mobility

• Double-layer leather on elbows, shoulders, hips & seat

• YKK & OPTI zippers

• Jacket can be worn separately & zipped to 4SR Kevlar jeans

• Compatible with Sas-Tec back and chest protectors (sold separately)

• Includes knee sliders & elbow sliders

Airbag not included.

For riders who demand top-level safety, track-day performance, and street comfort in one package, the RR Blue AR delivers.

Got questions? Contact us.

Designed for riders who demand maximum protection on the track and comfort for everyday riding, the two-piece version of the RR Diablo II AR delivers the best of both worlds. Built with our proven Airbag Ready® platform, this suit accommodates most leading electronic airbag vests while offering everyday versatility and freedom of movement. It’s all about functionality that matches your pace - whether you’re pushing hard on the racetrack or riding to your favourite lookout.

Ride hard. Stay protected. No compromises.

This suit is for serious riders who want it all: safety, comfort, and versatility in one dynamic package. The upper part - fully functional as a standalone jacket - is cut for a precise fit that moves with your body. Thanks to a revised anatomical fit, extended back, stretch panels, and improved waist shaping, the RR Diablo II AR performs just as well on the track as it does paired with 4SR Kevlar jeans.

New, larger perforation zones - double the surface area of previous models - mean significantly better airflow, and a reworked waistline ensures better comfort in the riding position. Finished in aggressive tones of red, black, and anthracite, this suit carries the unmistakable Diablo DNA in a practical two-piece format.

"WE DON’T MAKE BASIC, CHEAP, STRIPPED-DOWN SUITS."
Top quality for every rider = 4SR FAIR PLAY

At 4SR, we manufacture every suit - track or street - with the same uncompromising standard.
That means whether you ride the track every weekend or just take the occasional spin down your favourite twisty road, you're always wearing the best and safest gear we can produce.
The RR Diablo II AR comes fully equipped with 13 ergonomically placed protectors, including knee sliders - features that are often optional elsewhere. And yes, we stitch it all together using our patented 4x seam - so tough even asphalt fears it.

Push the limits? Get your elbow ready.

This two-piece suit features our latest Elbow Down TECH system. Whether you're chasing lean angle or testing your limits on a track day, the integrated elbow sliders have you covered. One pair of red elbow sliders is included - extras available in multiple colours.

4SR Two-Piece Suit – RR Diablo II AR | Airbag Ready®

• 1.2 mm premium cowhide / black, anthracite grey, red

• CE – EN17092-2 – Class AAA

• Pre-curved shoulders and sport-cut sleeves for optimal riding posture

• Top-level Betac protectors (shoulders, elbows, knees) – EN 1621-1:2012 certified

• Viscofoam memory pads – hips, coccyx, collarbones, forearms

• Aerodynamic speed hump

• YKK & OPTI zippers throughout

• Targeted perforation on sides, chest, and thighs

• Soft 3D inner lining

• Extensive, seamless aramid stretch for maximum mobility

• Flexible leather panels without restrictive seams

• Extended jacket back - can be worn on its own

• Reinforced with triple and patented 4x safety seams in high-stress zones

• Soft aramid stretch sleeve cuffs

• Comfortable, low-profile collar

• Two internal pockets

• Prepared for Sas-Tec back protector insert

• Ready for Sas-Tec chest protector

• Includes knee sliders

• Compatible with In&motion and Alpinestars Tech-Air® airbag systems

• Optional internal airbag cable routing & LED indicator

• AR Airbag Ready® is a registered trademark of 4SR

What Makes 4SR Different?

• Jacket from the 2-piece suit can also zip to 4SR Kevlar jeans

• Side-perforated leather - rare in two-piece suits

• Seamless aramid stretch in armpits and crotch

• Patented 4x safety seam in all abrasion-prone areas

• Dual-layer leather at elbows, shoulders, hips & seat

• Fully certified by Eurofins Textile Testing Spain to EN 17092:2020 – Class AAA

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Are you in need of a high-performance racing suit designed for standalone airbag systems? Look no further. The RR Evo III Pearl Blue AR is the latest Airbag Ready® suit offering total mobility and superior safety features, tailored specifically for professional racers. This suit is built for riders who seek both comfort and safety without compromise.

This new model features enhanced accordion stretch panels, ensuring it works seamlessly with any standalone airbag vest. With 17 strategically placed protectors and an ergonomic design, you get maximum protection in the most critical areas.

Key Features:

• 1.2 mm cowhide leather in pearl blue, fluorescent green, fluorescent red, and white.
• Replaceable Elbow Down TECH Sliders available in multiple colours: White, Black, Standard Red, Fluorescent Red, Fluorescent Yellow, or Green.
• High-quality Betac protectors certified to EN 1621-1:2012 standards on the shoulders, elbows, and knees.
• Viscofoam memory protectors on the hips, backbone, collarbones, and forearms for added impact resistance.
• YKK & OPTI Zippers for high durability and reliability.
• Local perforations under the arms for optimal ventilation.
• 3D mesh lining for enhanced breathability and comfort during rides.
• Aramid stretch panels for superior rider flexibility and movement.
• Pre-curved sleeves for an optimal riding position.
• Aerodynamic speed hump to minimise drag during high speeds.
• Reflective logo on the collar for improved visibility.
• Double and triple seams in stress-prone areas for extra durability.
• Two inside pockets for convenient storage.
• Jacket and pants can be worn separately for versatile use.
• Compatible with In&motion and Alpinestars Tech-Air® airbag systems.
• Knee sliders included for better grip and performance.

The RR Evo III Pearl Blue AR is Airbag Ready® and specifically designed to work with advanced airbag technology. It excludes the airbag system, but it is compatible with In&motion and Alpinestars Tech-Air® systems. The leathers can also be supplemented with an airbag data cable for LED control and feedback.

Unique 4SR Features:

• Attach the jacket to Motorcycle jeans for added versatility.
• Perforations on the sides for better airflow and comfort.
• Seamless Aramid stretch under the armpits and crotch for a smooth and irritation-free fit.
• Patented double 4SR seams, sewn four times for maximum abrasion resistance.
• Two layers of leather on critical areas like elbows, shoulders, hips, and the seat for extra durability.
• TÜV Rheinland® tested leather, achieving Level 2 safety certification after withstanding 11.2 seconds in an abrasion resistance test.

What’s Included:

• 4SR Elbow Down TECH Sliders in your choice of colours.
• Black knee sliders for added performance.
• Optional certified Sas-Tec chest and back protectors available separately.

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Black two-piece leathersuit designed for both high-performance riding and casual use. Ready for airbag integration, this suit offers unmatched safety and comfort on the track or during street rides.

Ride Like a Pro:

Crafted from premium 1.2 mm cowhide leather, this leathersuit is built to protect. The suit includes 17 protectors positioned on key areas such as shoulders, elbows, knees, and shins, with extra memory foam panels to enhance protection. Featuring Betac® protectors, this suit meets EN 1621-1:2012 certification standards, ensuring top-level protection.

Engineered for Maximum Comfort:

• Seamless stretch panels in the crotch and underarms for optimal flexibility.
• Pre-curved sleeves, well-shaped knees, and extended back for superior riding posture.
• Designed to be worn with Kevlar jeans or leather pants using integrated zippers.
• The narrow sleeve cuffs allow for full wrist mobility, perfect for racing gloves.

Key Features:

• 1.2 mm premium cowhide leather (black)
• Betac® top-quality protectors on shoulders, elbows, knees, and shins
• Viscofoam® memory protectors on collarbones, hips, and spine
• Aerodynamic hump with hydrobag space
• Local perforation on front and back for ventilation
• Triple-stitched seams for durability
• 4SR sliders on elbows and knees for extra protection
• AR Airbag Ready® for compatibility with In&motion® and Alpinestars Tech-Air® systems

What Makes This Suit Unique?

• Perforated sides for ventilation
• Attach the jacket to motorcycle jeans with ease
• Seamless aramid stretch panels for unmatched comfort and movement

This two-piece leathersuit combines durability, protection, and style, making it ideal for professional riders and enthusiasts alike.

Got questions? Contact us.

Looking for a high-performance racing suit that works with your airbag vest? The RR Evo III Camo AR two-piece suit from 4SR is designed to deliver top-tier protection and mobility. Featuring increased accordion stretch panels, this suit is perfect for both casual and competitive riding, offering full compatibility with any standalone airbag vest.

Key Features:

• Material: 1.2 mm cowhide leather, ensuring durability and comfort
• Protectors: High-quality Betac protectors for shoulders, elbows, and knees (EN 1621-1:2012 certified)
• Memory Protectors: Viscofoam on the hips, spine, collarbones, and forearms for impact absorption
• Zippers: Durable YKK and OPTI zippers for secure fastening
• Design: Pre-curved sleeves, aerodynamic hump, and longer back for an ideal riding position
• Ventilation: Local perforations under the arms and 3D mesh lining for airflow
• Sliders: Elbow Down TECH Sliders and replaceable knee sliders in multiple colour options
• Kevlar Stretch: Extensive Kevlar stretch for enhanced flexibility and mobility
• Custom Fit: Jacket can be attached to Kevlar jeans, and includes longer back for versatile use
• Compatible with Airbags: Ready for In & Motion or Alpinestars Tech-Air® airbag systems

Additional Benefits:

• Double and triple stitching for added durability in high-impact areas
• Two inside pockets for convenient storage
• Available in black, fluorescent red, and fluorescent yellow
• Reflective logo on the collar for added visibility

What Makes 4SR Unique?

• Kevlar stretch under the armpits and crotch is seamless, ensuring maximum comfort and durability.
• Areas prone to abrasion are reinforced with the patented 4SR double seam, stitched four times for added safety.
• The suit is tested by TÜV Rheinland, achieving Level 2 safety certification after withstanding 11.2 seconds in abrasion resistance testing.

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The Tech-Air® Airbag Vest is a fully standalone safety system. All 4SR racing suits are designed with built-in attachments to integrate the vest seamlessly.

With the LED Connection Cord, you can extend the vest’s status indicators directly to your suit’s forearm panel. This clever setup makes the LED lights easy to see while riding, instead of hidden under zipped leathers.

This allows you to quickly confirm:

• ✅ Airbag system is switched on and active

• ✅ Battery level

• ✅ Cartridge readiness

• ✅ Overall system status

Designed specifically for 4SR suits, this accessory offers riders a smarter, more convenient way to stay confident that their airbag is armed and ready.

Compatible with: Tech-Air^® Race & Tech-Air^® 7x

Compatible with: 4SR Airbag-Ready^® suits

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