
CMS Performance
CMS Performance Roll Bar for Shelby GT350/GT350R/GT500
$1,695.00
CMS Performance Roll Bar for Shelby GT350, GT350R, GT500
This Roll Bar Fits The Following Cars:
Ford Shelby GT350 (2016-2020)
Ford Shelby GT350R (2017-2020)
Ford Shelby GT500 (2015+)
The Best Roll Bar On Earth for Ford's Track Day Monsters
The CMS Performance Roll Bar is the strongest, safest, and most beautifully constructed roll bar on the market for the Shelby GT350, GT350R, and GT500. In designing our Shelby roll bar, safety, strength, and structural integrity were our primary goals. That's why it is fully TIG welded from ultra-strong Docol R8 Advanced High-Strength Steel sized 1.75" diam x .095" wall, vs. the mild-steel tubing other companies use. Docol R8 is 30-35% stronger than DOM mild steel and even 10-15% stronger than 4130 CrMo steel. This allows CMS Performance to design a roll bar that is stronger and lighter weight.
Precision CNC machined interlocking roll bar clamps, made to our specifications in the USA, make joining the main hoop and kickers easier during installation while giving the CMS Performance roll bar a premium, finished look. Adding an optional Shrader Rear Seat Delete Kit (not necessary on the GT350R) gives your roll bar installation a from-the-factory OEM look.
American Made Safety for an American Icon
Let's face it, safety is the primary reason to install a roll bar in your Shelby. So the CMS Performance Shelby Roll Bar is designed to place your harness shoulder straps at both the proper angle (0° to -20°) and distance to the driver. The rear kickers bolt to a strong existing bulkhead, requiring no reinforcement plates beneath the floor pan. Our use of state-of-the-art Docol ultra-high-strength-steel tubing throughout allows us to keep the driver's rear view unobstructed by diagonal braces, which also keeps weight down. Every detail is engineered with safety and structural integrity as our primary goal.
Precision Crafted and Custom Finished in OEM Colors
The other reason to install a roll bar is because it really complements the aggressive, race-inspired styling of the Shelby S550 and Shelby GT350/R/500. We're gear heads, we get that. So each bar is crafted by hand by master fabricators, 360o TIG welded for the ultimate in strength and durability, and then custom powder coated in our facility (at no extra charge). We've color-matched powder to most of Ford's factory paint colors for a truly customized look, or you can choose from thousands of custom colors and finishes like the amazing Superchrome, giving your Shelby a personalized look that will last. Going from raw Docol tube stock to a gleaming finish, every roll bar is handcrafted by our most experienced cage- and race car builders. Nothing is left to chance.
The CMS roll bar is designed to give you an unobstructed view through your rear window. None of your plastic interior trim needs to be removed or cut, just a little carpet that is hidden away. So if you ever need to put your car back to stock, it will look as though the roll bar was never there.
Easier Installation and Lots of Options for Your Shelby Roll Bar
Check out the GREAT installation video here! 1
Complete, detailed instructions make installation pretty simple (figure about two hours if you're reasonably handy; having a buddy helps!) All the supplied installation hardware is American made: Grade 8 mounting hardware and an industrial carbide drill bit. So you don't have worry that you don't have what you need for a flawless installation.
You can add six-point or four-point harnesses to your order to take full advantage of the safety upgrade your roll bar represents. The CMS Performance Sub Strap + Lap Belt Mount makes securely installing your racing harnesses easy. Check out the drop-downs above.
Many customers also add CMS Locking Harness Collars to keep harness shoulder straps right where you want them (they're not required for safety, but a lot of people like the look.)
1 Thanks so much to our customer "@1_trickpony_" for putting in the time and effort to shoot and edit a fantastic installation video!
Click Here For Installation Instructions
CMS Performance Shelby/Shelby Roll Bar Details:
Manufacturer: CMS Performance
Manufacturer part no.: RB03
Material: 1.75″ x .095" Docol R8 Advanced High-Strength Steel tubing
Construction: full 360o TIG welding
Design: one-piece main hoop and three-piece rear kicker for simpler installation.
Weight: 52 lbs. (23.6 kg)
Included hardware: all necessary Grade 8 bolts, nuts & washers
Drill bit: included
CMS Performance Roll Bar Features:
CNC-cut mounting plates.
Designed, built, and finished by CMS Performance in the USA.
American-made CNC machined high-strength steel interlocking clamps
Allows full seat travel with any seat.
Straightforward installation and perfect fitment, guaranteed.
This product is intended for off-road race track use only.

Forgeline
Forgeline FU3C Wheels
$1,695.00
FORGELINE FU3C
The Forgeline FU3C wheel pays homage to the classic Porsche wheel of the 1960s and 1970s. But unlike its predecessor, the FU3C is a modern 3-piece wheel that is manufactured from fully forged 6061-T6 aluminum centers using the latest engineering and manufacturing technology. The FU3C borrows from the classic wheel's five-spoke design with dimensional inverted tapered spokes, but rather than recreate yet another replica, the Forgeline engineering team spent many hours refining the FU3C design to create a wheel with a unique, distinctly Forgeline character. This resource-intensive process yielded a wheel with a concave center, carefully-tuned proportions, and extended spokes that reach out beyond the rim register and over the stepped lip outer.
Like all Forgeline Concave Series wheels, the FU3C locates the pad inboard of the outer rim to deliver depth and scale within the wheel center for a more modern look. Available in both deep concave profiles (for the most striking appearance) and shallow concave profiles (to create a staggered look or accommodate narrow width or higher-offset applications). These 3-piece wheels are assembled with hidden American-made stainless-steel ARP fasteners and Heli-Coil inserts. The FU3C is designed with a stepped lip outer in 19-inch, 20-inch, and 21-inch fitments.
Custom Made-to-Order for Each Customer and Each Unique Vehicle Application
Unique Center Design is Precision-Machined from Forged 6061-T6 Aluminum
Retro 5-Spoke Design Inspired by Classic Porsche Wheels
Concave Profile – Both Deep and Shallow Concave Profiles Available
Unique Full-Length Spokes Extend Beyond the Rim Register and Reach Over the Step of the Outer Rim Shell
Available in 19", 20" and 21"
Customizable Finish Options
Legendary Forgeline Quality

Girodisc
A1-161 Girodisc 2pc Front Brake Rotors (Ferrari 488)
$1,650.00
FITMENT (FRONT):
Ferrari 488 GTB with OEM CCM Rotors (Conversion to Iron)
Thunderhill 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. 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 class 12.9 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 in pairs

Girodisc
A2-133 Girodisc 2pc Rear Brake Rotors
$1,650.00
Thunderhill 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.
Fits Ferrari 430 with OEM CCM Rotors (Conversion to Iron)
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

COBB
COBB Accessport V3 for Porsche 718 Cayman-Boxster (All)
$1,625.00
COBB Tuning Accessport V3 for Porsche 718 (All)
The COBB Accessport V3 is the world's best-selling, most flexible ECU upgrade solution for the Porsche 718 Boxster and Cayman. Unlock power and torque masked by Porsche's conservative, one-size-fits-all factory ECU tuning by choosing and downloading COBB's more aggressive calibrations and mapping.
Plus, easily upgrade forever as you add future modifications to your engine with COBB's off-the-shelf (OTS) calibrations professionally designed for most of the popular bolt-on Porsche modifications. It's truly the last engine management solution you'll ever need!
Once you receive your Accessport, you just download the tuned map(s) of your choice from COBB's customer website, then upload them to your car's ECU via the OBD2 port. It's simple and easy, requiring only about 20 minutes! You can also save your original factory tune so you can change the ECU back to 100% stock anytime.
The Accessport V3 has a large, full color, higher resolution TFT screen that allows you to monitor up to six parameters in real time. Fully customizable look (multiple bezel colors and styles are available), layout (set up a race, street or dyno gauge cluster) and mounting options (choose from dozens of standard vehicle mounts). Of course, a full range of unparalleled COBB tuning is included, with enough space for 100 calibrations. This is your new Accessport, the last tuning device you'll ever need.
Warning! Installation of the Accessport V3 over anything other than OEM or COBB software may result in ECU/TCU failure. Please contact us at (844) 438-7244 if you have any questions.
CONFIRMED APPLICATIONS:
Boxster
2017-2021 Porsche 718 Boxster MT, PDK
2017-2021 Porsche 718 Boxster S MT, PDK
2018-2019 Porsche 718 Boxster GTS MT, PDK
Cayman
2017-2021 Porsche 718 Boxster MT, PDK
2017-2021 Porsche 718 Boxster S MT, PDK
2018-2019 Porsche 718 Boxster GTS MT, PDK
FEATURES:
Large, full color, higher resolution screen
Customizable multi-gauge display
In vehicle mount, with on/off switch
User-customizable start-up screen
Interchangeable faceplates
COBB ACCESSPORT V3 DYNO GRAPHS:

Girodisc
Corvette C8 Z06 Front Iron Rotor Conversion
$1,600.00
Fitment: Chevrolet Corvette C8 Z06
DESCRIPTION
These GiroDisc 2-piece rotors are a direct replacement for the front rotors on the Corvette C8 Z06 with the Z07 carbon ceramic brakes. Our 2-piece, fully floating assemblies are direct replacements for the carbon ceramic rotors and utilize the factory calipers, but with a different pad shape. This pad shape is commonly known as D1405, and is the same pad shape as a Z06 without the Z07 package. Please contact us if you need help finding pads.
The rotor rings are machined from a proprietary casting made of high-carbon steel formulated to GiroDisc’s specifications. This superior metallurgy results in a rotor that holds up better, and the 72 curved vanes act as a centrifugal pump pulling air in through the hub to effectively cool the rotors under hard use. The 2-piece design means a reusable hat which can be attached to new rings (part number D1-320) when they need to be replaced.
All major components including the hats, rotor rings, and drive pins are manufactured in-house at our facility in Bellingham, WA from domestically sourced materials. The hat is made from 6061-T6 aluminum and coated in a black anodize finish. The drive pins are made from a high-strength steel alloy and cadmium-plated for corrosion resistance. All rotors are assembled with spring clips and Belleville washers for race-ready float while also being street-friendly with no noise from loose hardware.
The minimum thickness at which we recommend replacing these rings is 34mm. We also recommend replacing them if a crack leads to the edge of the ring.
Sold and priced per pair.

Girodisc
A1-098 Girodisc 2pc Front Brake Rotors
$1,600.00
Thunderhill 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.
Fits Lamborghini Murcielago Early (4/4 Pot)
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

Girodisc
A1-097 Girodisc 2pc Front Brake Rotors
$1,600.00
Thunderhill 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.
Fits Lamborghini Murcielago Late (8/4 Pot)
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

Girodisc
A1-164 Girodisc 2pc Front Brake Rotors (991 Cup Car)
$1,600.00
Thunderhill 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.
Fits Porsche 991 Cup Car
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight (approx. 8 lbs) allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

Girodisc
A1-165 Girodisc 2pc Front Brake Rotors (Viper ACR)
$1,600.00
Thunderhill 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.
Fits Dodge Viper ACR with OEM CCM Rotors (Conversion to Iron)
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight (8 lbs per corner) allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

Girodisc
A1-176 Girodisc 2pc Front Brake Rotors (Porsche 981 GT4 Clubsport)
$1,600.00
PORSCHE 981 GT4 CLUBSPORT
This Girodisc conversion system is a direct rotor replacement for the Porsche GT4 Clubsport. These two-piece floating rotors will bolt directly to the car and work with OEM calipers perfectly.
By upgrading your brakes with lightweight high-performance Girodisc rotors (paired with Girodisc A2-176 rear rotors), your factory brake bias and ABS efficiency are maintained. The low rotational and unsprung weight allows for quicker acceleration and transient suspension response.
When used with Pagid or PFC racing brake pads and Thunderhill RF1 Racing brake fluid, you have an amazing, durable solution to cracked or broken carbon-ceramic rotors at a fraction of the cost of the factory PCCBs.
The hat of each rotor is machined from 6061-T6 aircraft aluminum. The disc is manufactured from cast iron using the same specs and materials as professional racing organizations. The curved-vane design acts as a centrifugal pump to force cool air through the disc.
The disc and hat mount together using a floating mount system with high-strength alloy steel drive pins and Grade 12 cap screws. The drive pins transfer braking load while maintaining axial and radial float between the disc and hat to accomodate heat expansion. Hardened washers and anti-noise springs eliminate the rattle and noise sometimes associated with floating rotors.
The two-piece Girodisc design allows for disc-only replacement (using Girodisc D1-176); the aluminum hats are re-usable to save money.
Sold/priced per pair.

Girodisc
A2-164 Girodisc 2pc Rear Brake Rotors (991 Cup Car)
$1,600.00
Thunderhill 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.
Fits Porsche 991 Cup Car
The GiroDisc system is an upgrade to a 2-piece steel rotor and aluminum hat combination and is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight (approx. 8 lbs) allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

Girodisc
A2-176 Girodisc 2pc Rear Brake Rotors (Porsche 981 GT4 Clubsport)
$1,600.00
PORSCHE 981 GT4 CLUBSPORT
This Girodisc conversion system is a direct rotor replacement for the Porsche GT4 Clubsport. These two-piece floating rotors will bolt directly to the car and work with OEM calipers perfectly.
By upgrading your brakes with lightweight high-performance Girodisc rotors (paired with Girodisc A2-176 rear rotors), your factory brake bias and ABS efficiency are maintained. The low rotational and unsprung weight allows for quicker acceleration and transient suspension response.
When used with Pagid or PFC racing brake pads and Thunderhill RF1 Racing brake fluid, you have an amazing, durable solution to cracked or broken carbon-ceramic rotors at a fraction of the cost of the factory PCCBs.
The hat of each rotor is machined from 6061-T6 aircraft aluminum. The disc is manufactured from cast iron using the same specs and materials as professional racing organizations. The curved-vane design acts as a centrifugal pump to force cool air through the disc.
The disc and hat mount together using a floating mount system with high-strength alloy steel drive pins and Grade 12 cap screws. The drive pins transfer braking load while maintaining axial and radial float between the disc and hat to accomodate heat expansion. Hardened washers and anti-noise springs eliminate the rattle and noise sometimes associated with floating rotors.
The two-piece Girodisc design allows for disc-only replacement (using Girodisc D1-176); the aluminum hats are re-usable to save money.
Sold/priced per pair.

Girodisc
A1-273 Girodisc 2pc Front Brake Rotors Tesla Plaid
$1,600.00
Thunderhill 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.
Fits Tesla Plaid Front Only
The GiroDisc system is a direct replacement for the OEM brake disc. The 2-piece floating disc 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 Giro Disc rotors are lighter than OEM pieces. The reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.
When used with Pagid or PFC performance brake pads, and Thunderhill RF-1 brake fluid (also available from CompetitionMotorsport.com), you have an amazing 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 which is constructed in the USA and is 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 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 as well to minimize future replacement costs and deliver outstanding performance and cooling.
Sold/Priced per pair.

Alpinestars
Alpinestars GP Tech v3 Driver Suit
$1,599.95
Alpinestars GP Tech v3 Driver Suit
The GP Tech v3 features an outer shell twill material developed exclusively for Alpinestars which is combined with an innovative aramidic-based knit lining for optimum levels of comfort, protection, light weight and comfort. Thanks to the introduction of the aramidic base lining with an open weave structure, this suit is superbly breathable, and these levels are further enhanced by the breathable panels on the side. The GP Tech v3 also incorporates lightweight stretchable panels at the center back, lower back, elbow, crotch and knee zone to provide great flexibility both in and out of the car.
Alpinestars GP Tech v3 Protection
Certified to the FIA 8856-2018 homologation standard.
Super-lightweight and breathable multi-layer suit incorporating thin stretchable panels, for maximum comfort and effective regulation of body temperature.
Nomex® anti-static outer shell fabric for exceptional heat and flame-resistant proprieties.
Sold with laundry bag for convenience and effective material fiber protection.
Alpinestars GP Tech v3 Construction
Strategically positioned Formula 1 derived stretch panels at center back and spine, lower back, elbow, crotch and knee zones for enhanced flexibility, both in and out the car.
Alpinestars fully floating arm construction with stretchable knit fabric ensures minimal material resistance while driving.
Soft and thin wrist and ankle cuffs for maximum comfort and reduced weight.
Soft collar with knit fabric and secure hook and loop closure for improved comfort.
Alpinestars exclusive shoulder epaulette construction provides an effective feature for the extraction of the driver in the event of a crash.
Printed logos help maintain suit’s material integrity and reduce weight.
Alpinestars GP Tech v3 Details:
Manufacturer: Alpinestars
Manufacturer part no.: 3354120
Premium YKK lightweight zipper with Alpinestars leather pull and double slider for a versatile, customizable fit.
Thigh pockets for convenient, unobtrusive storage.
Fit: athletic
Weight: 325g/m2

Bell
Bell GT6 RD Carbon 4C/EC SA2020 Helmet
$1,599.95
Bell GT6 RD Carbon: Factory Comms & Drink Tube Installed
Derived from iconic Bell HP6, the Bell GT6 RD Carbon features the same modern and aggressive design developed for racers in closed-car environments, featuring a wide eye port for extended vision with an ultra-lightweight Premium carbon shell. Its ventilation slots can be connected to various types of air intakes for external cooling systems. The GT6 RD is fitted with a fully-integrated radio communication kit, including a front-mounted microphone and ear cup speakers providing excellent sound along with insulation from external noise. The kit includes a wired four-pin male IMSA radio connector.
Bell GT6 RD Carbon Fiber Helmet Details:
Manufacturer: Bell Helmets
Manufacturer part number: 123912
Construction: Ultra-light premium carbon-composite shell
Homologation: FIA 8859-2015 and Snell SA2020
Factory installed HANS anchors: yes
Interior: dark grey high-strength, high-comfort FR fabric
Color: carbon, gloss finish
Sizes: 6 3/4 (54cm) to 7 5/8+ (61cm+)
Bell GT6 RD Carbon Fiber Helmet Additional Features:
Factory-installed communication system with microphone and ear cups (IMSA connector)
Factory-installed drink tube
Wide eye port for better vision in closed cockpit cars
Advanced multi-density, multi-piece liner maximizes energy absorption and impact performance
Integrated channels for optional drink tube (not included)
Extraction vents maximize cooling air ventilation
Optional top- and side-air intakes available for use with external cooling system
Ear cups increase noise insulation
What's In The Bell GT6 RD Carbon Box:
GT6 Carbon Fiber helmet
Installed communications
Hans anchors
Clear Bell SE06 3mm DSAF shield
Draw-string helmet bag
Plastic tear-off posts installed
Hex wrench key
Drink tube system (shown in photos for illustrative purposes) is not included.
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