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REPLACEMENT ROTOR RINGS ONLY (NO HATS) Need new rings for your Girodisc A1-122 rotors? We got them. Rings come complete with all new hardware and full instructions for re-assembly. Price is for a pair of rings and two hardware kits. Additional hardware kits are available separately upon request.

ROTOR RINGS ONLY (NO HATS) Need new rings for your Girodisc A2-032 rear rotors? We got them. Rings come complete with all new hardware and full instructions for re-assembly. Price is for a pair of rings and 2 hardware kits. Additional hardware kits are available separately upon request.

FITMENT (REAR): Ford Shelby GT500 (2007-12) Ford Mustang BOSS 302(S) Ford Mustang GT (2011-14 w/ Brembo calipers) 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. 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 Thunderhill 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.

The D2-145 is the replacement rotor ring kit for the Girodisc A2-145 two-piece steel rotor and aluminum hat combination. It includes all necessary hardware to replace both rear rotor rings. We recommend using the Pagid 2487 racing brake pad with this Girodisc system. As an authorized Girodisc dealer with one of the largest inventories in the country, we ship products within one business day to ensure we meet your delivery deadline. CONTAINS TWO REPLACEMENT ROTOR RINGS AND ASSOCIATED HARDWARE.

IPD Competition Plenum for Porsche 997.1 Carrera/Carrera S The IPD "Y" design plenum replaces the factory "T" style air distributor and provides substantial power and torque gains by means of a more efficient design. Horsepower gains range from 24 to 28 depending on engine displacement and engine condition. These max power gains are experienced in the mid range where is it most useable and enjoyed. The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums. Porsche has been controlling engine output by restricting the inlet track for decades. This has been successfully accomplished by utilizing smaller throttle bodies. This simple power control solution has been a very effective way of preventing lower level models from out performing certain flagship models, especially models with prolific racing pedigree. Although the factory engine packages are fantastic performance machines, they are engineered and developed to achieve specific performance numbers that satisfy a target demographic and compete with rival brands. Unfortunately driving enthusiasts who seek an elevated Porsche driving experience require performance levels well outside the target market. IPD Plenums deliver substantial power and torque gains, but when combined with larger throttle bodies they perform even better. All of the IPD "Competition" Plenums utilize the next largest size throttle body offered by Porsche. In this case, the Competition Plenum does away with your original 74mm throttle body in favor of Porsche's 82mm 997 GT3 throttle body (can be added above). All of our Competition Plenums are designed to perform with cars equipped with high performance exhaust systems. The more extensive the exhaust system (headers, kats and mufflers) the better. Optimizing air intake and exhaust together creates a balanced performance package that allows the engine to inhale and exhale more air thus creating more power and torque. IPD has pioneered another new Plenum design with the Competition Carrera Plenum. Laminar flows and volumetric efficiencies have been further enhanced with our unique and innovative internal merge collector area. This completely new approach has yielded not only great performance gains but more linear power delivery and improved throttle response as well. Gains vary depending on pre-existing mods and quality of after-market exhaust installed. As we all "should" know, horsepower and torque become harder to find and typically more expensive as we climb the proverbial performance ladder. That being said, performance components yield different power gains depending on the order they were installed. IPD tests and evaluates all products on bone stock cars, this establishes a level playing field and a better "apples to apples" comparison. The Competition Carrera Plenum however is designed to work with applications that are already moderately to heavily modified. Power gains will vary with each Carrera, but the bottom line is, there will be noticeable and impressive gains that are sure to make any Porsche Carrera driving enthusiast smile. Power improvements will be fully realized once the factory ECU/DME makes all the necessary "adaptation" requirements. This process can be expedited with a series of "hard pulls" or spirited full throttle acceleration runs through the gears. Of course this should only be performed on a closed course circuit. This plenum requires a Bosch 82mm throttle body, which can be added to your order above for only $225 (save $100).

The D1-145 is the replacement rotor ring kit for the Girodisc A1-145 two-piece steel rotor and aluminum hat combination. The kit includes all the necessary replacement hardware to safely change out your old, worn rotor rings. We recommend using the Pagid 8081 racing brake pad with this Girodisc rotor system. As one of the largest stocking dealers in the country, we ship Girodisc products within one business day to ensure we meet your delivery deadline. INCLUDES TWO REPLACEMENT ROTOR RINGS AND ASSOCIATED HARDWARE.

Replacement Rotor Rings (Does Not Include Hats) FITMENT (FRONT): Audi 8S TTRS (2014-Present) Thunderhill 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. These rotor rings include all necessary hardware to install on your original Girodisc aluminum hats (do not re-use the old hardware). Sold/priced per pair.

Girodisc D2-220 Replacement Rotor Rings (380mm) Girodisc replacement rotor rings are direct replacements for the iron discs on your Girodisc A2-220 380mm two-piece rotors, with no modifications necessary. New cap screws and washers are included with these replacement rotors. We do not recommend re-using the old hardware. (This kit is contains two cast-iron discs and associated hardware. No aluminum center hat.) The replacement rotor rings 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 the load from braking 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. Rotor ring-only replacement helps to minimize costs and deliver outstanding performance. Sold/priced per pair.

OMP ARS-R Racing Seat Seat in gel-coated fiberglass shell. Large shoulder harness slots to accommodate varios heights. Medium heigth side bolsters for lateral leg support. Removable back, base and leg cushion for maximum individual seating comfort. Upholstered entirely in high breathability AIRTEX® material.

Sabelt GT3 Racing Seat The new Sabelt GT3 Racing Seat was re-designed with light weight and driver comfort in mind. The GT3 shell weighs 15% less than the previous model thanks to the innovative use of lightweight lamination. Additionally, the new removable leg cushion has been developed to increase driver comfort. Low side bolsters make entry and exit easy while still keeping the driver firmly (and safely) in place. Anything but a basic racing seat, the Sabelt GT3's plush, high-wear velour upholstry, brilliant gel-coat shell, and use of high-density foam throughout add up to a very comfortable, great-looking seat without breaking the bank. FEATURES: FIA 8855-1999 homologation Weight: 21.6 lbs (9.8 kg) Side bolstering to prevent lateral movement Six-point harnesses ready thanks to sub-belt holes in the bottom of the shell High wear resistance velour fabric Removable leg cushion

Alpinestars Atom FIA Graphic Driver Suit The Alpinestars Atom FIA Graphic racing driver suit has a two-layer construction with a soft, knitted liner giving you optimum levels of both protection and driver comfort. With a twill outer shell and aramid lining for comfort and breathability, this suit is also equipped with a fully floating arm construction, pre-curved arms and legs, and stretch panels on crotch, back and waist for an optimized fit. Note: this FIA 8856-2018 racing driver suit has regular elastic cuffs. Alpinestars Atom FIA Graphic Driver Suit Features: Certified to FIA 8856-2018 Comes exclusively in the Black/Anthracite/Orange Fluo colorway Two-layer suit incorporating knitted stretchable panels for maximum comfort and excellent breathability. Alpinestars fully floating arm construction with stretchable knit fabric ensures minimal material resistance while driving. Alpinestars Atom FIA Graphic Driver Suit Construction: Aramidic knitted stretchable panels on the back, waist and crotch for enhanced comfort and ease of movement. Ergonomic collar with a soft stretchable insert for extended coverage and maximum driver comfort. 100% aramidic outer shell fabric for exceptional heat and flame-resistant proprieties. Adjustable belted waist ensures a precise fit. Anatomical arm, leg and torso patterned paneling for an optimum fit in the driving position. Alpinestars exclusive shoulder epaulette construction provides for the extraction of the driver in the event of a crash. Ribbed, stretchable wrists and cuffs for optimum comfort. Premium YKK double-sided metal zipper for a versatile and customizable fit. Thigh pockets for convenient, peace-of-mind storage. Regular fit design. Weight 420 g/m2

FITS: CHEVROLET CORVETTE WITH Z06 PACKAGE (2023-) REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. 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. 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 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 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.

FITS: PORSCHE CAYMAN S / BOXSTER S (2005-2014+) WITH PCCB REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. 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. 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.

ROTOR RINGS ONLY (NO HATS) Need new rings for your Girodisc 350mm 2pc rotors? We got them. Rings come complete with all new hardware and full instructions for re-assembly. Price is for a pair of rings and 2 hardware kits. Additional hardware kits are available separately upon request.

FITS: Nissan GTR (2009-2011) (2012+) REPLACEMENT ROTOR DISCS ONLY, DOES NOT INCLUDE ALUMINUM HAT. 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. 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 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 2-piece GiroDisc design allows for rotor only replacement to minimize replacement costs and deliver outstanding performance and cooling. Sold/Priced per pair.