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 colors
• 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.

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.

At 4SR, we know that a perfectly fitted racing suit is essential for every rider. That’s why we customize each suit to match the individual needs and unique physical proportions of every racer. Whether you have a specific color scheme in mind, need sponsor logos, names, numbers, or fully personalized designs, we can bring your vision to life.

Our custom suits can be tailored with high-quality printed logos, sewn leather logos, embroidery, or laser-burning techniques, ensuring exceptional detail, durability, and style on the track.

Before placing an order, please contact us at sales@4sr-leathers.com.au to receive more information and a personalized design preview tailored to your style. We’re excited to collaborate with you and create the ultimate racing suit.

Custom suit pricing: AUD $2,300 – $3,500, depending on design complexity and materials used.

Check out our videos where 4SR racers share why they compete in the British Supersport Championship and why they choose 4SR leathers. Watch in the video tab below!