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Alpinestars GP Tech v4 Driver Race Suit SFI Ever dreamt of suiting up in gear that makes you feel invincible on the track? Well, dream no more. Introducing the Alpinestars GP Tech V4 Driver Suit - where cutting-edge technology meets unparalleled comfort. Alpinestars GP Tech v4 Driver Suit SFI Bootcut Features Exclusive Outer Shell Material: Developed just for Alpinestars, this twill material isn't just about looking sleek. It's about giving you that edge. Aramidic-Based Knit Lining: Imagine the comfort of your favorite pajamas but with the protection of a knight's armor. That's what this innovative lining offers. Plus, it's lightweight, so you won't feel like you're dragging a chainmail around the track. Super Breathability: Thanks to the aramidic base lining with its open weave structure, you'll feel the breeze even when you're burning rubber. And with added breathable panels on the side, you'll stay cooler than the other side of the pillow. Stretchable Panels: Strategically placed at the center back, lower back, elbow, crotch, and knee zone. Because who said you can't be flexible while going full throttle? Advanced Three-Layer Construction: Ensures breathability, maximum comfort, and effective regulation of body temperature. It's like having a personal AC unit. Anatomically Engineered Design: Pre-curved arms and legs mean you fit into this suit like a glove. Or, more accurately, it fits you. Formula 1-Derived Stretch Panels: Located on the lumbar area, elbows, knees, and crotch for that extra oomph in flexibility. Enhanced Breathability Areas: More ventilation because let's face it, racing is sweaty business. All-New Extraction Handle: A safety feature straight from Formula 1. Because your safety is our top gear. Lightweight Knitted Cuffs: For that snug feeling without the weight. Soft Collar with Knit Fabric: No more scratchy necks. Just pure comfort. Elastic Waist Construction: Because one size should fit YOU. Printed Logos: Helps maintain the suit’s integrity and reduces weight. Plus, it looks pretty darn cool. Premium YKK Metal Zipper: For when you need to get in and out in a flash. Thigh Pockets: Because where else would you keep your secret racing snacks? Athletic-Regular Fit Design: Look good. Feel good. Race even better. Certified to FIA 8856-2018: Because we're all about keeping you safe in style. Alpinestars GP Tech v4 Driver Suit SFI Bootcut FAQ's What rating are FIA race suits? They are certified to the FIA 8856-2018 homologation standard. Are racing suits fireproof? Absolutely! They're designed to protect you from fire hazards on the track. How long do FIA race suits last? Typically, they have a life span of about 3-5 years, depending on usage. What does FIA approved mean? It means the suit meets the strict safety and quality standards set by the Fédération Internationale de l'Automobile. Can you wash a fireproof racing suit? Yes, but always follow the manufacturer's instructions to maintain its integrity. What is the difference between FIA and SFI? Both are governing bodies that set safety standards, but FIA is international while SFI is primarily US-based. What should I wear under my race suit? It's recommended to wear fire-resistant undergarments for added protection. Ready to Unleash the Beast? Don't just be a racer; be a legend. Suit up in the Alpinestars GP Tech V4 Driver Suit and dominate the track. Alpinestars GP Tech v4 Driver Suit SFI Bootcut Size Chart

Alpinestars GP Tech v4 Driver Suit FIA Ever dreamt of suiting up in gear that makes you feel invincible on the track? Well, dream no more. Introducing the Alpinestars GP Tech v4 Driver Suit - where cutting-edge technology meets unparalleled comfort. Alpinestars GP Tech v4 Driver Race Suit Features Exclusive Outer Shell Material: Developed just for Alpinestars, this twill material isn't just about looking sleek. It's about giving you that edge. Aramidic-Based Knit Lining: Imagine the comfort of your favorite pajamas but with the protection of a knight's armor. That's what this innovative lining offers. Plus, it's lightweight, so you won't feel like you're dragging a chainmail around the track. Super Breathability: Thanks to the aramidic base lining with its open weave structure, you'll feel the breeze even when you're burning rubber. And with added breathable panels on the side, you'll stay cooler than the other side of the pillow. Stretchable Panels: Strategically placed at the center back, lower back, elbow, crotch, and knee zone. Because who said you can't be flexible while going full throttle? Advanced Three-Layer Construction: Ensures breathability, maximum comfort, and effective regulation of body temperature. It's like having a personal AC unit. Anatomically Engineered Design: Pre-curved arms and legs mean you fit into this suit like a glove. Or, more accurately, it fits you. Formula 1-Derived Stretch Panels: Located on the lumbar area, elbows, knees, and crotch for that extra oomph in flexibility. Enhanced Breathability Areas: More ventilation because let's face it, racing is sweaty business. All-New Extraction Handle: A safety feature straight from Formula 1. Because your safety is our top gear. Lightweight Knitted Cuffs: For that snug feeling without the weight. Soft Collar with Knit Fabric: No more scratchy necks. Just pure comfort. Elastic Waist Construction: Because one size should fit YOU. Printed Logos: Helps maintain the suit’s integrity and reduces weight. Plus, it looks pretty darn cool. Premium YKK Metal Zipper: For when you need to get in and out in a flash. Thigh Pockets: Because where else would you keep your secret racing snacks? Athletic-Regular Fit Design: Look good. Feel good. Race even better. Certified to FIA 8856-2018: Because we're all about keeping you safe in style. Alpinestars GP Tech v4 Driver Race Suit FAQ's What rating are FIA race suits? They are certified to the FIA 8856-2018 homologation standard. Are racing suits fireproof? Absolutely! They're designed to protect you from fire hazards on the track. How long do FIA race suits last? Typically, they have a life span of about 3-5 years, depending on usage. What does FIA approved mean? It means the suit meets the strict safety and quality standards set by the Fédération Internationale de l'Automobile. Can you wash a fireproof racing suit? Yes, but always follow the manufacturer's instructions to maintain its integrity. What is the difference between FIA and SFI? Both are governing bodies that set safety standards, but FIA is international while SFI is primarily US-based. What should I wear under my race suit? It's recommended to wear fire-resistant undergarments for added protection. Ready to unleash the beast? Don't just be a racer; be a legend. Suit up in the Alpinestars GP Tech v4 Driver Suit and dominate the track. Alpinestars GP Tech v4 Driver Race Suit Size Chart

COBB Tuning Accessport V3 for Porsche 997.1 Turbo/GT2 The COBB Accessport V3 is the world's best-selling, most flexible ECU upgrade solution for all turbocharged Porsche 997.1 Turbo and GT2. 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. Warning! Installation of this Accessport over anything other than OEM or COBB software may result in ECU/TCU failure. Please contact COBB Support if you have any questions. Stage 1 maps are designed for a stock engine configuration, stock airbox, and stock exhaust. Stage 2 maps are designed for a high-flow exhaust and cats with an otherwise-stock engine, etc. Stage 3 1000 maps designed for a high-flow exhaust, thicker core intercoolers, and COBB 1000-cc injectors. Stage 3 1300 maps designed for a high-flow exhaust, thicker core intercoolers, and COBB 1300-cc injectors. Each stage map enables brake boosting for two seconds. This allows you to floor the gas with your foot on the brake to build boost. The timer on the sport button has also been raised to 30 seconds so you can use the overboost feature longer. There's also a valet mode that limits RPM to 4,000, and an anti-theft mode that prevents the vehicle from starting. The in-cabin mountable 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 hundreds 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. SUPPORTED VEHICLES: 2007-2009 Porsche 911 (997.1) Turbo AT, MT 2008-2009 Porsche 911 (997.1) GT2 MT 2011 Porsche 911 (997.1) GT2 RS MT 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

Girodisc A1-272 Two Piece Floating Racing Brake Rotors These Rotors Fit The Following Cars (w/ OEM Steel Rotors) Porsche 992 GT3 Front Porsche 992 GT3RS Front The Girodisc system is a direct replacement for the OEM disc on the 992 GT3 with OEM iron rotors. No modifications are necessary, allowing use of unmodified factory pad shapes unlike most aftermarket solutions for this Porsche. The disc will bolt directly to the car and work with OEM calipers perfectly. By upgrading your brakes with lightweight, high performance replacements -- as opposed to a big brake kit -- your factory brake bias and ABS efficiency are preserved. The central hat section of our rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The rotor is made from Girodisc's 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 12 high strength alloy steel drive pins, manufactured by Girodisc in the USA to their own specifications and cadmium plated for long-lasting corrosion resistance. These pins take the load from braking 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, eliminating the rattle and noise commonly 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 ring when needed. When used with Pagid or PFC racing brake pads and hi-temp Thunderhill Performance RF1 racing brake fluid, you have what amounts to a truly amazing solution to overheating or warping rotors. If your car came stock with OEM center lock wheels please select the center lock drive pin option. Sold/priced in pairs.

Call us any time at 844-438-7244 for Thunderhill-Exclusive Forgeline pricing you won't find anywhere else! Thunderhill offers FREE SHIPPING on all Forgeline Wheel Orders! FORGELINE GT1 (CENTER LOCK) Contact a wheel specialist today at 844-438-7244 to discuss the details of your custom Forgeline wheel build. We can guide you through sizing, offsets, finishes, and other details to make sure your Forgelines are perfectly suited to your needs! FITS PORSCHE CENTER LOCK Derived from the Forgeline GTD1 racing wheel, the GT1 brings racing DNA to the street. The GT1 represents the latest in advanced wheel technology -- including one-piece forged monoblock construction, motorsport engineered design, I-beamed spokes and spoke spans -- to deliver head-turning good looks with track-ready capability! The Forgeline GT1 is a fully-forged one-piece monoblock wheel. Utilizing manufacturing technology similar to the very successful GA1R wheel, the concave 12-spoke design of the GT1 looks great and allows plenty of room for caliper clearance and extreme brake fitment. Forgeline's computer-simulated FEA design process yields a wheel that is very lightweight and extremely stiff, with excellent fatigue strength. The GT1 is engineered exclusively for Porsche center lock applications and fits all Porsche center lock systems for street and track, including Cup Car and RSR applications. Currently available in 18, 19, 20, and 21-inch diameters, we'll have your GT1 made in your choice hundreds of customizable finish options! FEATURES: One-Piece Monoblock Construction Concave Profile 12-Spoke Design Engineered for Porsche Center Lock Fitments I-Beamed Spoke Technology I-Beamed Spoke Spans Along the Lip Very Lightweight, Stiff, and Strong Generous Brake Clearance Forged 6061-T6 Aluminum Fits All Porsche Center Lock Systems for Street and Track, Including Cup Car and RSR Applications Customizable Finish Options Legendary Forgeline Quality

Call us any time at 844-438-7244 for Thunderhill-Exclusive Forgeline pricing you won't find anywhere else! Thunderhill offers FREE SHIPPING on all Forgeline Wheel Orders! FORGELINE VX1R (FIVE-LUG) Contact a wheel specialist today at 844-438-7244 to discuss the details of your custom Forgeline wheel build. We can guide you through sizing, offsets, finishes, and other details to make sure your Forgelines are perfectly suited to your needs! If you like the look of our popular VX1, but need a load rating that is suitable for dedicated track duty, then the VX1R was engineered for you! The VX1R is a fully track-ready competition wheel equal in weight and strength to Forgeline's famous GA1R and GS1R Competition Series wheels.The VX1R features a sharp Y-spoke design, with long spokes that wrap around the lug holes, striking sharp angles, a deep concave profile, and a chamfered outer edge. The Forgeline VX1R is a fully-forged, one-piece monoblock wheel utilizing manufacturing technology similar to the very successful GA1R. Beyond just beautiful style, the VX1R is engineered to allow plenty of room for caliper clearance and extreme brake fitment. Forgeline's computer-simulated FEA design process yield a wheel that is lightweight and stiff, with excellent fatigue strength.Currently available in 18, 19, 20, and 21-inch diameters with a range of widths and offsets, the VX1R can be made to accommodate most five-lug or center lock applications. And just like any Forgeline wheel, the VX1R is available with fully customizable finish options! FEATURES: One-Piece Forged Monoblock Construction Concave Profile Sharp Y-Spoke Design Striking Sharp Angles Strong Chamfered Machining Details Lightweight Load Rated for Motorsport Applications Generous Brake Clearance Forged 6061-T6 Aluminum Includes Aluminum Center Cap Customizable Finish Options Legendary Forgeline Quality

991 PORSCHE TURBO & 981 GT4 (OEM PCCB) This Girodisc system is a 410mm two-piece steel rotor and aluminum hat combination, a direct-replacement upgrade for the OEM PCCB brakes. The A1-156 will bolt directly to your Porsche and work perfectly with your OEM calipers. There are two main reasons for replacing your PCCB: first, the Girodisc rotors are designed to shed heat more effectively than the original rotors; second, the machined cast iron rotor rings are far more durable than the fragile OEM carbon-ceramic rotors. This is critical when you're swapping wheels on and off the car for track days or racing, because it's so easy to nick a carbon rotor and take a chunk out of it. When paired with the Girodisc A2-156 rear rotors, your factory brake bias and ABS efficiency are maintained. When used with Pagid or PFC performance brake pads, and Thunderhill RF1 brake fluid, you have an amazing solution to overheating, cracking and warping rotors. The central hat section is made from 6061-T6 aircraft aluminum. The rotor is manufactured in the US from cast iron using the same specs and materials as professional racing organizations. The racing-developed vane design acts as a centrifugal pump to force cooling air through the disc. Rotor and hat mount together through a floating mount system using high-strength alloy steel drive pins and Grade 12 cap screws. These transfer braking load while maintaining axial and radial float between the rotor and hat for superior heat management. 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 rattle and noise. 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.

PORSCHE 991 TURBO & 981 CAYMAN GT4 OEM PCCB This Girodisc system is a 390mm two-piece steel rotor and aluminum hat combination, a direct-replacement upgrade for the OEM PCCB brakes. The A2-156 will bolt directly to your Porsche and work perfectly with your OEM calipers. There are two main reasons for replacing your PCCB: first, the Girodisc rotors are designed to shed heat more effectively than the original rotors; second, the machined cast iron rotor rings are far more durable than the fragile OEM carbon-ceramic rotors. This is critical when you're swapping wheels on and off the car for track days or racing, because it's so easy to nick a carbon rotor and take a nice chunk out of it. When paired with the Girodisc A1-156 front rotors, your factory brake bias and ABS efficiency are maintained. When used with Pagid or PFC performance brake pads, and Thunderhill RF1 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 eight to ten 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 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.

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 599 GTB 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 8 or 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.

Call us any time at 844-438-7244 for Thunderhill-Exclusive Forgeline pricing you won't find anywhere else! Thunderhill offers FREE SHIPPING on all Forgeline Wheel Orders! FORGELINE GE1R (PORSCHE CENTER LOCK) Contact a Forgeline specialist today at (844) 438-7244 to discuss the details of your Forgeline wheel build. We will guide you through sizing, offsets, finishes, and other details to make sure your Forgelines are perfectly suited to your needs! FITS PORSCHE CENTER LOCK HUBS The eight-spoke center-locking Forgeline GE1R represents the absolute latest in advanced wheel technology, including one-piece forged monoblock construction, motorsport engineered design, and I-beamed spokes and spans. It combines head-turning good looks with race-ready strength and durability. The Forgeline GE1R is a fully-forged one-piece monoblock wheel that is 30% stiffer than the popular GS1R, minimizing wheel deflection under load for incredibly precise control. The concave eight-spoke design of the GE1R offers generous caliper clearance for large racing-brake fitments. Forgeline's computer-simulated FEA design process yields a wheel that is very lightweight and extremely stiff, with excellent fatigue strength. The GE1R is engineered exclusively for Porsche center lock applications such as the GT3 and GT3RS; it can be equipped with a special center lock to accommodate Porsche Cup Car and RSR hub assemblies. Available in 18, 19, 20, and 21-inch diameters, the GE1R is fully customizable with thousands of finish options! FEATURES: One-Piece Monoblock Forged 6061-T6 Construction Concave Profile Eight-Spoke Design Engineered for Porsche Center Lock Fitments I-Beamed Spoke Technology I-Beamed Spoke Spans Along the Lip Extremely Lightweight, Stiff, and Strong Generous Brake Caliper Clearance Accommodates Porsche Cup Car Pressure Washer and Hub Customizable Finish Options Legendary Forgeline Quality

FITMENT (REAR): McLaren 650S McLaren 570S McLaren 720S McLaren 600LT 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 for the McLaren 600LT, 720S, 650S or 570S is a direct replacement for the OEM carbon ceramic rotors. No modifications are necessary, the Girodisc rotors will bolt directly to your McLaren and work with the original calipers without issue. We recommend Pagid 4346 racing brake pads for this Girodisc system, in either RS29 (endurance) or RS14 (sprint) compound. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum. The disc is made from cast iron to the same specification and material as used by professional racing organizations. It is 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 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. 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. When used with Pagid pads and high-temp racing brake fluid, you have a truly amazing, race-proven solution to the fragile, ultra-expensive carbon-ceramic rotors on your McLaren.

Call us any time at 844-438-7244 for Thunderhill-Exclusive Forgeline pricing you won't find anywhere else! Thunderhill offers FREE SHIPPING on all Forgeline Wheel Orders! Forgeline GE1 Wheels (Porsche Centerlock) Contact a wheel specialist today at 844-438-7244 to discuss the details of your custom Forgeline wheel build. We can guide you through sizing, offsets, finishes, and other details to make sure your Forgelines are perfectly suited to your needs! The 8-spoke center locking Forgeline GE1 combines the latest in advanced wheel technology, including one piece forged monoblock construction, motorsport engineered design, I-beamed spokes, and I-beamed spoke spans to deliver head-turning good looks with track-ready capability. The GE1 is engineered exclusively for Porsche center lock applications and fits all Porsche center lock systems for street and track, including Cup Car and RSR applications. The Forgeline GE1 is a fully-forged one-piece monoblock wheel. Utilizing manufacturing technology similar to our very successful GA1R wheel, the concave 8-spoke design of the GE1 looks great and allows plenty of room for caliper clearance and extreme brake fitment. The one-piece monoblock forging and computer-simulated FEA design process yield a wheel that is very lightweight, extremely stiff, and has excellent fatigue strength. The GE1 is machined from a single forging of 6061-T6 aluminum. It is currently available in 18, 19, 20, and 21-inch diameters. (Please Note: Depending on size, the GE1 may be available in deep, medium, or shallow concave profiles.) And just like any Forgeline wheel, the GE1 is available with fully customizable finish options. One-Piece Monoblock Construction Available in 18", 19", 20", and 21" Concave Profile 8-Spoke Design Engineered for Porsche Center Lock Fitments I-Beamed Spoke Technology I-Beamed Spoke Spans Along the Lip Very Lightweight Generous Brake Clearance Forged 6061-T6 Aluminum Fits All Porsche Center Lock Systems for Street and Track, Including Cup Car and RSR Applications Customizable Finish Options Legendary Forgeline Quality

FITMENT (REAR): Ferrari 488 Ferrari F8 Ferrari Pista 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

This Girodisc iron rotor conversion is a direct replacement for the OE carbon ceramic disc with the addition of the provided caliper spacers. At 394mm diameter, these Girodisc rotors are slightly larger than the 380mm OEM rotors. The central hat section of the Girodisc rotor is made from strictly USA-sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodisc's 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 forcing cool air through the disc. The disc and hat have a floating mount system, which utilizes 12 high-strength alloy steel drive pins, manufactured in the US by Girodisc and cadmium plated for long-lasting corrosion resistance. These pins take the loads from braking while maintaining the axial and radial float between the hat and disc. They are secured by class 12.9 cap screws and hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise springs on the disc side, allowing the iron disc to expand as it heats up while eliminating the rattle and noise commonly associated with floating rotors. This float also allows the rotor to self center between the brake pads. Once the Girodisc system is in place, you simply replace the cast iron discs when needed. This reduces cost over time by allowing you to re-use the aluminum central hats. Sold/priced per pair

Call us any time at 844-438-7244 for Thunderhill-Exclusive Forgeline pricing you won't find anywhere else! Thunderhill offers FREE SHIPPING on all Forgeline Wheel Orders! FORGELINE GTD1 (CENTER LOCK) Contact a wheel specialist today at 844-438-7244 to discuss the details of your custom Forgeline wheel build. We can guide you through sizing, offsets, finishes, and other details to make sure your Forgelines are perfectly suited to your needs! Though made from the same forgings and similar design as our GT1 street wheel, the GTD1 is specifically engineered for professional endurance racing. Designed for professional racing teams competing in the United Sportscar TUDOR GT Daytona (GTD) class, the Forgeline GTD1 combines the latest in advanced wheel technology, including one piece forged monoblock construction, motorsport engineered design, I-beamed spokes & spoke spans, and knurled bead seats. This wheel is engineered to withstand the rigors of top-level endurance racing, delivering uncompromising strength and exceptional deflection stiffness. The GTD1's original configuration includes a special center lock to accommodate the Porsche Cup Car and RSR hub assembly, but it can also be engineered to fit other center lock hub assemblies as well as select 5-lug and 6-lug applications. The GTD1 is machined from a single forging of 6061-T6 aluminum. The GTD1 is currently available only in 18-inch diameters in limited widths and offsets. And just like any Forgeline wheel, the GTD1 is available with fully customizable finish options. FEATURES: One-Piece Monoblock Construction Concave Profile 12-Spoke Design Engineered for Porsche Center Lock Fitments I-Beamed Spoke Technology I-Beamed Spoke Spans Along the Lip Very Lightweight, Stiff, and Strong Generous Brake Clearance Forged 6061-T6 Aluminum Fits All Porsche Center Lock Systems for Street and Track, Including Cup Car and RSR Applications Customizable Finish Options Legendary Forgeline Quality