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Bell Racing GT6 RD 4C/EC Auto Racing Helmet IMSA Comms, Hydration, and ZeroNoise® in a Race-Ready Shell Built for serious endurance and GT drivers, the Bell Racing GT6 RD 4C/EC Helmet brings full comms and hydration integration into a track-ready shell without compromise. With its titanium finish, aggressive HP6-derived design, and wide eye port for visibility in tight cockpits, this is the helmet for those who treat every lap like a qualifying session. The GT6 RD 4C/EC is ready for IMSA communication and hydration systems right out of the box—because seconds count, even off the throttle. 4C: Carbon Composite 4 Layer Construction On Bell helmets, “4C” stands for “Carbon Composite 4 Layer Construction.” It refers to the shell technology Bell uses: a 4-layer carbon composite laminate. This blend typically combines carbon fiber with other advanced fibers (like Kevlar® or fiberglass) in multiple layers. The purpose is to deliver a shell that is lighter than fiberglass alone, but more affordable and versatile than Bell’s top-end full carbon HP series shells (like HP7 or HP77 which use pure carbon/advanced aerospace layups). In the case of this Carbon-4C/EC model, the helmet is a Carbon Composite 4-layer shell with EC (electronic comms) kit integration. Bell GT6 RD 4C/EC Helmet Features: Integrated IMSA Radio & Hydration System: Comes pre-installed with electronics and tubing for plug-and-play connection to your team’s radio and drink system. 4C/EC Carbon-Glass Composite Shell: Lightweight and high-strength, built from premium carbon-glass for optimal energy absorption and all-day wearability in long stints. ZeroNoise® Advanced Electronics: Equipped with high-power speakers, a noise-canceling microphone, and superior sound insulation for crisp in-car communication even in loud environments. Wide Eyeport: Offers exceptional lateral and vertical visibility, ideal for closed-cockpit racing where every degree of vision matters. Track-Proven Ventilation: Strategically placed intake ports can be connected to cooling systems for maximum airflow in hot race conditions. Standards: Dual certified to FIA 8859-2015 and Snell SA2020 for maximum track-day and competition eligibility. Bell GT6 RD 4C/EC Helmet Size Chart Bell Racing GT6 RD Carbon 4C/EC Helmet FAQs: What’s the difference between the GT6 and the GT6 RD? The GT6 RD includes factory-installed IMSA radio comms and hydration ports, while the standard GT6 does not. Is this compatible with ear buds or over-ear speakers? Yes, the 4C version supports both ear cups and ear buds depending on your personal or team setup. Uses IMSA connections. What is ZeroNoise® and why does it matter? ZeroNoise® is Bell's advanced audio platform, engineered for crystal-clear in-car communication with minimal distortion and maximum driver focus. Can I use this helmet for endurance racing? Absolutely. With comms, hydration, and a lightweight carbon-glass shell, it's made for long hours in the car at high intensity. The Bell GT6 RD 4C is the pro’s choice when comfort, comms, and clarity matter most. From sprint races to 24-hour stints, this helmet brings together titanium-level fit, cutting-edge audio, and pure performance.

Sparco Pro Jacket: Lightweight Fire-Resistant, and Ready to Race Feel the adrenaline and confidence of the Sparco Pro Jacket, a perfect blend of protection and mobility. Made with breathable Nomex fabric, this jacket is SFI 3.2A/5 certified, giving you the top-tier fire resistance you need on the track. The fully floating sleeves ensure maximum flexibility, making it easy to move, drive, and dominate your track day. And let’s not forget the style—this jacket comes in a sleek all-black design, perfect for racers who want to look as good as they perform. Key Features & Benefits SFI 3.2A/5 Certified: Designed for safety at all levels of competition. Breathable Nomex Fabric: Lightweight and fire-resistant, keeping you cool under pressure. Fully Floating Sleeves: Maximum freedom of movement, so you can race without restrictions. Sleek All-Black Design: Look sharp while staying safe. Sparco Pro Jacket Specs Material: Lightweight Nomex fabric. Certification: SFI 3.2A/5. Color: All-black. Fit: Designed for high mobility and comfort on track days. Sparco Pro Jacket FAQs Q: Is this jacket suitable for professional racing?A: Yes! The SFI 3.2A/5 certification ensures it’s built for professional and competitive racing environments. Q: How should I care for the Sparco Pro Jacket?A: We recommend dry cleaning to maintain the fire-resistant properties of the Nomex fabric. Q: What’s the advantage of floating sleeves?A: The fully floating sleeves allow unrestricted movement, making it easier to handle the car without feeling restricted. Ready to suit up? Get the Sparco Pro Jacket now and experience comfort, protection, and style like never before. Your best lap is waiting—grab yours today!

Sparco Prime Spec 1 Driver Race Suit Save $1,100 off suggested retail price! The Sparco Prime Spec 1 Race Suit is a USA-exclusive suit that improves on Sparco’s original version of the Prime SP-16. The first thing you will notice is the new suit design. The Prime Spec 1 introduces two new multi-color options. In addition to a new design, the Sparco Prime Spec 1 adds extra features like fully-floating sleeves, belted waist, and internal pockets. The Sparco Prime Spec 1 Race Suit was made in collaboration with the McLaren Formula One team, resulting in the lightest FIA-approved racing suit in the world. The Prime Spec 1 has unparalleled technological features developed in Sparco’s vaunted R&D laboratories. This development project involved optimizing every race suit detail in terms of materials and construction. Details like an ultra-slim zipper, soft seamless Nomex/Vicosa® wrist and ankle cuffs, further reduced neck and shoulder pads, use of thinner thread, and ultra-flat stitching. The Sparco Prime Spec 1 Race Suit uses a three-layer construction with proprietary Sparco technology. The third, outer layer is a double-faced mesh made from original DuPont Nomex Comfort, an innovative fabric that delivers both extreme protection and maximum comfort, woven using the Kompact® system. The resulting material contains a high percentage of antistatic fibers, giving it extremely effective antistatic properties as well as excellent breathability. The Sparco Prime Spec 1 Race Suit features pre-curved arms and legs along with strategically-placed mesh stretch panels, giving this racing suit unbelievable comfort. The Sparco Prime Spec 1 is available in two color options. Sparco Prim Spec 1 Driver Race Suit Details: FIA 8856-2000 homologated Lightest FIA-approved suit in the world Exclusive DuPont Nomex fibers provide superior fire protection and comfort Pre-curved arms and legs Strategically located stretch panels Seamless arms and legs

A2-081 Girodisc 2pc Rear Brake Rotors (Discontinued Design) FITMENT (REAR): Ford Shelby GT500 (2007-12) Ford Mustang BOSS 302(S) Ford Mustang GT (2011-14 w/ Brembo calipers) Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. This Girodisc system is an upgrade to a two-piece steel rotor and aluminum hat combination as a direct replacement for the OEM brake discs.  The Girodisc floating rotors will bolt directly to your Mustang and work flawlessly with OEM calipers.  By upgrading your brakes with these lightweight high-performance replacements, as opposed to a big brake kit, your factory bias is maintained as well as your ABS effectiveness and efficiency.  The Girodisc rotors are lighter than OEM pieces, resuutling in a reduction in rotational and unsprung weight (4 lbs per corner) allowing for quicker acceleration, stronger braking, and faster suspension response. When used with Pagid or PFC performance brake pads, and Competition Motorsport RF-1 brake fluid, you have the best possible solution to overheating, cracking, and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.  The disc is manufactured from cast iron constructed in the USA, made to the same specification with the same material used by professional racing organizations.  The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc.   The rotor and hat mount together through a floating mount system which utilizes ten high strength alloy steel drive pins manufactured by Girodisc in the USA to their own specifications and are cadmium plated for corrosion resistance.  The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat.  The pins are secured by Grade-12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The two-piece Girodisc design allows for rotor only replacement as well to minimize future replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

D2-102 Girodisc Rear Replacement Rotor Rings (Discontinued Rotor Design) Discontinued Rotor Design, Final Sale, No Returns or Excahanges FITS: FERRARI 430 CHALLENGE REPLACEMENT ROTOR DISC ONLY, DOES NOT INCLUDE ALUMINUM HAT. Competition Motorsport is an Authorized dealer for GiroDisc products and we are one of the largest stocking dealers in the country.  We ship most products same or next business day to ensure we meet your delivery deadline. The GiroDisc replacement rotor system is a direct rotor disc replacement for the Giro Disc 2-piece hat and rotor and no modifications are necessary.   The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by GiroDisc in the USA to our own specifications and are cadmium plated for corrosion resistance.  The alloy drive pins transfer the load from the brake action while maintaining the axial and radial float between the disc rotor and hat.  The pins are secured by grade12 cap screws with hardened washers and mounted with anti-noise spring washers to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

A2-166 Girodisc 2pc Rear Brake Rotors (Honda FK2-8 Type R) - Discontinued Design Competition Motorsport is an authorized dealer for Girodisc products. As one of the largest stocking dealers in the country, we ship most products same or next business day to ensure we meet your delivery deadline. FITMENT: Honda FK2 / FK8 Type R Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. The Girodisc system is an upgrade to a two-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake discs. The two-piece floating rotors will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with these lightweight high-performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Girodisc rotors are lighter than OEM pieces. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. When used with Pagid or PFC racing brake pads and Competition Motorsport RF1 racing brake fluid, you have an unbeatable solution to overheating, cracking and warping rotors. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is manufactured from cast iron, constructed in the USA and made to the same specification with the same material used by professional racing organizations. The rotors' curved vane design was developed in racing and acts as a centrifugal pump to force cooling air through the disc. The rotor and hat mount together through a floating mount system which utilizes 8-10 high strength alloy steel drive pins manufactured by Girodisc in the USA and are cadmium plated for corrosion resistance. The alloy drive pins transfer braking loads while maintaining axial and radial float between the disc rotor and hat to allow for heat expansion while eliminating the rattle and noise associated with floating rotors. The pins are secured by Grade12 cap screws with hardened washers and mounted with anti-noise spring washers . The two-piece Girodisc design allows for rotor-ring only replacement to minimize future replacement costs and deliver outstanding performance and cooling. Sold/priced per pair.

Bell Racing Helmets RS7 Pro SA2020 Helmet Based on the BELL HP7 design and featuring a lightweight carbon composite shell using Bell’s high-pressure proprietary molding system, the BELL RS7 auto racing helmet uses an innovative shell and shield design to improve acoustic comfort, aerodynamic performance and energy absorbing capabilities. The sleek, modern design features an advanced ventilation system with 14 air-intake and extraction channels that can be used with or without air-intake covers (available separately). The BELL RS7 helmet double screen anti-fog (DSAF) visor and rubber gasket seal ensured air, water and dust will not enter the eyeport. BELL RS7 AUTO RACING HELMET CERTIFICATIONS Snell SA2020 FIA 8859-2015 BELL RS7 AUTO RACING HELMET FEATURES Lightweight carbon composite shell. Advanced multi-density, multi piece liner maximizes energy absorption and impact performance. Optical-grade injection molded Double Screen Anti-Fog (DSAF) visor. Powerful top and chin bar ventilation system with 14 air intake and extraction channels. Shell and shield design optimized to improve aerodynamic performance. Integrated channels offer multiple options to install drink tube and radio systems. Air intake, side air extractors, rear spoiler, top and chin bar gurneys available separately. Top-air attachments available separately for use with external cooling systems. Factory installed HANS posts. Synthetic rubber gasket seal prevents dirt and water entering the helmet. Shield and pivot kit: SE07, SV(SE07). ADDITIONAL BELL RS7 PRO HELMET SHIELDS AVAILABLE HERE   BELL RS7 AUTO RACING HELMET COLORS Solid colors: White or Matte Black. Graphics colors: Stamina Grey or Stamina Red. BELL RS7 AUTO RACING HELMET SIZE CHART IN THE BELL RS7 AUTO RACING HELMET BOX Bell RS7 Pro SA2020 auto racing helmet Clear SE07 DSAF shield Draw string helmet bag HANS post anchors installed Don't forget to check out the Competition Motorsport Performance Racing Helmet Bag, the perfect way to keep your new Bell RS7 Pro auto racing helmet safe and secure throughout each race weekend.

Alpinestars GP Race v2 Boot Cuff Driver Race Suit The Alpinestars GP Race v2 is a boot-cuffed, multi-layer race suit developed for all-round drivers racing in advanced competitions. Compliant with the latest SFI 3.2A/5, the Alpinestars GP Race v2 has an athletic/regular fit and a three-layer construction. One layer is aramidic twill and two layers are an aramidic base knit. This combination offers a 5% increase in breathability while still maintaining its light weight at just 400 g/m2. The Alpinestars GP Race v2 also incorporates knitted stretch panels on the armholes and crotch areas, along with a larger, longer back stretch panel to really aid driver flexibility and range of motion. Internal flat-seam stitching, fully floating arms, and extended shoulders provide an exceptional level of driver comfort. Alpinestars GP Race v2 Boot Cuff Driver Protection Certified to the latest SFI 3.2A/5 homologation standard Alpinestars fully floating arm construction with stretchable knit fabric ensures minimal material resistance while driving Laundry bag included for convenience and effective suit fiber protection Alpinestars GP Race v2 Boot Cuff Race Suit Construction Multi-layer, lightweight suit incorporating knitted stretch panels for maximum comfort and excellent breathability Aramidic knitted stretch panels on back, waist, and crotch for enhanced comfort and ease of movement Ergonomic collar with soft knitted lining for extended coverage and maximum comfort 100% Aramidic outer shell fabric for exceptional heat- and flame-resistance Adjustable collar and belted waist ensure a precise fit Anatomical arm, leg, and torso patterned paneling for an optimum fit in the driving position Alpinestars-exclusive shoulder epaulette construction eases driver extraction in the event of a crash Alpinestars GP Race v2 Boot Cuff Race Suit Key Features Ribbed, stretchable wrist and inner foot cuffs optimize comfort Traditional outer leg boot cuff for added protection Premium YKK double-slider zipper Thigh pockets for convenient, peace-of-mind storage Regular fit design Weight: 400 g/m2

Alpinestars GP Race v2 Driver Race Suit The Alpinestars GP Race v2 is a multi-layer fire suit developed for all-round drivers racing in advanced competitions. Compliant with the latest FIA Standard 8856-2018, the Alpinestars GP Race v2 has an athletic/regular fit and a three-layer construction. One layer is aramidic twill and two layers are an aramidic base knit. This combination offers a 5% increase in breathability while still maintaining its light weight at just 400 g/m2. The Alpinestars GP Race v2 also incorporates knitted stretch panels on the armholes and crotch areas, along with a larger, longer back stretch panel to really aid driver flexibility and range of motion. Internal flat-seam stitching, fully floating arms, and extended shoulders provide an exceptional level of driver comfort. Alpinestars GP Race v2 Driver Protection Certified to the latest FIA 8856-2018 homologation standard Alpinestars fully floating arm construction with stretchable knit fabric ensures minimal material resistance while driving Laundry bag included for convenience and effective suit fiber protection Alpinestars GP Race v2 Driver Race Suit Construction Multi-layer, lightweight suit incorporating knitted stretch panels for maximum comfort and excellent breathability Aramidic knitted stretch panels on back, waist, and crotch for enhanced comfort and ease of movement Ergonomic collar with soft knitted lining for extended coverage and maximum comfort 100% Aramidic outer shell fabric for exceptional heat- and flame-resistance Adjustable collar and belted waist ensure a precise fit Anatomical arm, leg, and torso patterned paneling for an optimum fit in the driving position Alpinestars-exclusive shoulder epaulette construction eases driver extraction in the event of a crash Alpinestars GP Race v2 Driver Race Suit Key Features Ribbed, stretchable wrist and foot cuffs optimize comfort Premium YKK double-slider zipper Thigh pockets for convenient, peace-of-mind storage Regular fit design Weight: 400 g/m2

A2-171 Girodisc 2pc Rear Brake Rotors (Audi S3 - VW Golf R) -  Discontinued Design Fitment (Rear): Audi S3 VW Golf R Discontinued New old stock rotor.  These have the straight grooves as images show, not the new curved grooves.  Final Sale, no returns or exchanges. Competition Motorsport is an authorized dealer for Girodisc products and we are one of the largest stocking dealers in the country.  We ship most Girodisc systems the same or next business day to ensure we meet your delivery deadline. The Girodisc system is a direct replacement for the OE disc. No modifications are necessary. The disc will bolt directly to the car and work with OE calipers perfectly. By upgrading your brakes with lightweight high performance replacements as opposed to a big brake kit, your factory bias is maintained as well as your ABS efficiency. The Girodisc front rotors are approx 22.0lbs vs. 27.4lbs for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum.  The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc.  The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade 12 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Sold/priced per pair.

Sparco Eagle RS8.2 Driver Race Suit Save $1,000 off the suggested retail price! The Sparco Eagle RS8.2 racing suit uses a combination of Sparco Hocotex® and Eagle fabrics to produce an ultra-lightweight and supremely breathable race suit. With a more fitted, modern cut, the Sparco Eagle RS8.2 features pre-formed armholes and, in line with enhancing driver mobility during a race, the elasticized panels have been optimized (arm holes, sides, and elasticized back). The main structure of the Sparco Eagle RS8.2 suit, like in the previous version, is Sparco's tried and tested characteristic Hocotex® single-layer 0.6 mm ultra-thin fabric, combined with other materials like Eagle elasticized fabric (well-known and used in various Sparco race suit models). Sparco added flat, ultra-light anti-abrasion reinforcements on the legs and arms, stitched quilting made with thin yarn, concealed pockets, and a pre-formed neck and belt with the characteristic Sparco logo. There is an extractor flap inserted in the arm hole specially designed not to interfere with the positioning of a HANS device. Sparco Eagle RS8.2 Driver Race Suit Details: Weight: 290 to 320 g/m2 Exclusive Sparco Hocotex® and Eagle fabrics Anatomically pre-curved arms and legs Strategically-placed mesh stretch panels Available in sizes EU64 and EU66 FIA 8856-2000 approved

Bell Racing GTX.3 SA2020 Helmet   With its refined, aerodynamic design and lightweight carbon composite shell, the Bell Racing Helmets GTX.3 Composite SA2020 helmet provides the best performance and pro features for open wheel, open compartment, karting, formula and dirt track racers. This Bell GTX.3 Composite SA2020 has an integrated shield and dual screen anti-fog (DSAF) visor with rear-facing vents which are ideal for these forms of racing, allowing for air exchange and unobstructed vision without worrying about dust and dirt. Bell Racing GTX.3 Auto Racing Helmet SIZE CHART Bell Racing GTX.3 Auto Racing Helmet Features Snell SA2020 and FIA 8859-2015 homologation Includes clear SE03 3mm DSAF shield (SV SE03/05 pivot system) with DSAF anti-fog insert Sleek aero styling with integrated wing Front chin bar Gurney ("duckbill") improves high-speed aerodynamic performance Venturi airflow system lets fresh air in, hollow synthetic rubber gasket seal keeps dirt, water and dust out High-strength, lightweight carbon-composite construction using new high-pressure molding system Multi-piece, multi-density high-impact custom bead absorbing liner for low- and high-velocity impact protection Ultra-plush grey Comfort-Max FR® interior fabric wicks away moisture Install integrated drinking tube and radio microphone systems with the integrated face piece channels Multi-density foam interior and contoured cheek pads offer a professional fit Standard-sized eye port M6 terminal hardware and hex wrench for Head and Neck Restraint devices Additional visor shields for the Bell Racing GTX.3 available here. Add a Competition Motorsport Performance Racing Helmet Bag and keep your new Bell Racing GTX.3 racing helmet safe and secure throughout each race weekend.

Bell Racing GT6 Pro Helmet SA2020   The Bell Racing GT6 Pro auto racing helmet features the same modern and aggressive design as HP6, developed for racers in closed-car environments and featuring a wide eyeport for extended vision with a lightweight Premium carbon glass shell. Its ventilation slots can be connected to various types of air intakes for external cooling systems. It can be fitted with optional ear cups providing optimal noise insulation, with fully integrated radio communication kit and hydration systems (available separately or in GT6 RD Titanium version). Bell GT6 Pro Auto Racing Helmet Features Lightweight premium carbon/fiberglass composite shell FIA 8859-2015 and Snell SA2020 homologated Wide eye port for excellent vision in closed-cockpit cars Advanced multi-density, multi-piece liner maximizes energy absorption and impact performance Integrated channels in face piece offer multiple options to install drink tube and radio systems Extraction vents maximize cooling and air circulation Factory-installed HANS anchors Optional top forced-air intake can be installed on the left or right top side vents for use with an external cooling system Optional ear cups increase noise insulation Interior: Dark Grey high-strength, high comfort FR fabric Additional Bell Racing GT6 Pro Helmet Visors Are Available Here Bell GT6 Pro Auto Racing Helmet Colors The Bell GT6 Pro is availabile in your choice of Gloss White or Matte Black. Bell GT6 Pro Auto Racing Helmet Size Chart What Comes in the Bell GT6 Pro Box? Bell Racing GT6 Pro auto helmet Clear SE06 3mm DSAF shield (installed) Drawstring helmet pouch Plastic tear-off posts (installed) Hex wrench key Finally, add the Competition Motorsport Performance Racing Helmet Bag to your order to keep your new Bell GT6 Pro auto racing helmet safe and secure going to and from the track, and throughout each race weekend.

HJC H10 Carbon Fiber SA2020 Helmet   The HJC H10 Carbon Fiber SA2020 helmet is the ideal helmet for all types of racing. From the your local track day to the starting line at SCCA Nationals, its comfortable fire-resistant, moisture-wicking Comfort-Carbon interior and Advanced Ventilation System keep you cool and comfortable. The HJC H10 Carbon is an affordable alternative to more expensive carbon fiber helmets without sacrificing fit, feel or safety. HJC H10 CARBON FIBER AUTO RACING HELMET FEATURES Snell SA2020 approved HJC H10 carbon fiber Helmet weight (size L): 3.2 lbs (1.45 kg) Carbon fiber composite weave shell is extremely light weight Superior fit and comfort using advanced CAD technology ACS (Advanced Channeling System) provides front-to-back airflow flushing heat and humidity up and out Optional shields available: Amber, Dark Smoke, Dark Blue, and Black Chrome Optional clear spoiler is available Polycarbonate anti-fog shield with tear-off posts Pre-installed M6 terminals for head and neck restraints Improved front ventilation Double D-ring retention system HJC H10 CARBON FIBER AUTO RACING HELMET SIZES Sizes XS-XXL ADDITIONAL HJC H10 CARBON FIBER HELMET SHIELDS AVAILABLE HERE Also, check out the Competition Motorsport Performance Racing Helmet Bag, the best way to keep your new HJC H10 Carbon safe and secure throughout each race weekend. SIZE CHART SIZE CENTIMETER HAT SIZE INCHES XS 54-55 6 3/4 – 6 7/8 21 1/4 – 21 5/8 S 56-57 7 – 7 1/8 22 – 22 1/2 M 58-59 7 1/4 – 7 3/8 22 7/8 – 23 1/4 L 60-61 7 1/2 – 7 5/8 23 5/8 – 24 XL 62-63 7 3/4 – 7 7/8 24 3/8 – 24 3/4 XXL 64-65 8 – 8 1/8 25 1/4 – 25 5/8