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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 Aventador 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.

FITMENT (FRONT): McLaren 570S McLaren 650S 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 650S or 570S is a direct replacement for the OEM carbon ceramic rotors. They use a different brake pad than the OEM carbon ceramic rotors, with an annulus (pad swept area) of 66mm or less. This is done to keep rotor weight low. (A steel/aluminum rotor with the same annulus as the OEM carbon ceramic rotors would be unnecessarily heavy.) We recommend the Pagid 8081 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 8081 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 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

FITS: MCLAREN 720S (CCB Rotor) The Girodisc system is a direct replacement for the OE CCB disc on all vehicles that came equipped with CCB rotors from the factory. 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 performance pads and hi-temp fluid, you have what amounts to a truly amazing solution to overheating or warping rotors. 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 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

Stand21 Featherlite Head & Neck Restraint The FeatherLite from Stand21 is a breakthrough technological achievement in the FHR family, offering the absolute highest level of safety while weighing an incredible 310g (0.68 lb.), excluding padding. The use of very high-strength carbon combined with a new, more ergonomic design of the legs makes this FHR the lightest safety device created to date. A revolutionary new integrated strap passage allows seamless new radius of curvature, alleviating discomfort from interference between the helmet, the device, and the seat/headrest. The first Stand21 Featherlites are expected to hit the U.S. in August, and they're sure to be hugely popular among pros and the most demanding amateur drivers. FEATURES: FIA 8858-2010 and SFI 38.1 Certified Weight: 310 grams (11 oz., 0.68 lbs) Unprecedented curvature beam alleviating discomfort between the helmet, FHR, and seat/headrest Revolutionary integral strap passage Available in sizes Medium and Large Available for 20° or 30° incline angles Supplied with black padding, sliding tether, and protective bag New more ergonomic leg design

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.

FERRARI 458 CHALLENGE This Girodisc system is a direct replacement for the OEM front CCM rotors on the 458 Challenge, although a different brake pad with an annulus (pad swept area) of 66 mm or less must be used. We suggest the Pagid 8081, the most popular pad used with Girodisc rotors on the 458 Challenge. The lower-annulus design of the Girodisc rotors keeps weight low without sacrificing braking performance. The central hat section of the Girodisc rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from their 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 a long lasting corrosion resistance. These pins take the load from braking action 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

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.

Bell MAG-10 Rally Carbon Fiber Auto Racing Helmet Bell MAG-10 Rally Carbon Drawing inspiration from the HP10 Rally, the MAG-10 RALLY CARBON stands out as a top-tier, ultra-lightweight rally helmet with a contemporary design. Crafted with a feather-light carbon composite shell, it boasts features like a quick-detach Half Chin Bar (HCB), adjustable carbon peak, and a new integrated sunscreen. Prioritizing comfort, sound insulation, and a professional fit, this helmet is the preferred choice for rally professionals seeking premium quality. With insights from the HP10's extensive R&D, the MAG-10 RALLY CARBON redefines excellence in the Premium Helmet segment. Integrated with ZeroNoise® technology, powerful speakers, and a noise-canceling microphone, it promises unparalleled safety, comfort, and communication efficiency. Bell Mag- 10 Rally Carbon Fiber Helmet Details:   Open face helmet featuring ultra-lightweight Premium carbon composite shell Fast Removable Carbon Half Chin Bar (HCB) quickly and easily detachable to ensure fast access to breathing ways without the need to remove the helmet in case of emergency Advanced multi-density, multi-piece liner to maximize energy absorption and impact performance Adjustable carbon sun peak Adjustable integrated anti-scratch dark smoked sunscreen Integrated cheek pads with multi densities advanced materials for optimal comfort Flexible yet sound insulating integrated ear muffs for comfort combined with sound insulation ZeroNoise® electronics, high power (yet lightweight) speakers and efficient noise cancelling microphone. Ultra-reliable heavy duty In-Molded Female Nexus Connector (compatible with other brands of amplifiers) Detachable right side-cover for smooth integration of the Female Nexus Connector Flat right side cover supplied in the box, for those who prefer using a straight cable coming out of the helmet instead of the integrated connector Factory installed Hans anchors as original equipment Interior: Dark Grey High Strength – High Comfort FR Fabric Alternative interior fabric colors: Tan, White, Red, Purple, Blue, Green and Neon Yellow (by special order). Adjustable sunscreens available as accessories in various colors and TWO lengths to ensure optimal visual comfort Color: Carbon, Gloss finish Sizes: 54-55-56-57-58-59-60-61-61+  

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

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 (5-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! Derived from Forgeline's GTD1 racing wheel, the Forgeline GT1 5-Lug brings its racing DNA to the street. The GT1 5-Lug 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 Forgeline GT1 5-Lug is a fully-forged one-piece monoblock wheel that is manufactured using technology similar to our very successful GA1R wheel. The GT1 5-Lug's concave 10-spoke design includes extra long spokes that extend beyond the hidden lug holes while allowing 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 GT1 5-Lug 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 GT1 5-Lug may be available in deep, medium, or shallow concave profiles). And just like any Forgeline wheel, the GT1 5-Lug is available with fully customizable finish options. FEATURES: One-Piece Monoblock Construction Deep, Medium, or Shallow Concave Profile 10-Spoke Design I-Beamed Spoke Technology I-Beamed Spoke Spans Along the Lip Very Lightweight, Stiff, and Strong Generous Brake Clearance Forged 6061-T6 Aluminum 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 GTD1 (5-Lug Open) 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 Forgeline GTD1 5-Lug is a 10-spoke 5-lug derivative of our race-winning GTD1 wheel. The Forgeline GTD1 5-Lug combines the latest in advanced wheel technology, including one piece forged monoblock construction, motorsport engineered design, I-beamed spokes, and channelled spoke spans. This wheel is engineered to withstand the rigors of top-level endurance racing, delivering uncompromising strength and exceptional deflection stiffness. FEATURES: One-Piece Monoblock Construction Concave Profile 10-Spoke Design I-Beamed Spoke Technology I-Beamed Spoke Spans Along the Lip Lightweight, Stiff, and Strong Generous Brake Clearance Forged 6061-T6 Aluminum 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 AR1 Wheels (5 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! The AR1 is an exciting evolution in Forgeline monoblock styling, with a very angular split spoke pattern, extra-deep concave profile, and radically-chamfered outer edge. The Forgeline AR1 is a fully-forged one-piece monoblock wheel that utilizes manufacturing technology similar to our very successful GA1R wheel. Beyond just beautiful style, the AR1 is engineered to allow plenty of room for caliper clearance and extreme brake fitment. And the one-piece monoblock forging, computer-simulated FEA design process, and I-beam spoke technology yield a wheel that is lightweight, stiff, and has excellent fatigue strength. The AR1 is machined from a single forging of 6061-T6 aluminum. It is currently available in 18, 19, 20, 21, and 22-inch diameters with a range of widths and offsets. (Please Note: Depending on size, the AR1 may be available in deep, medium, or shallow concave profiles. See sizing chart for details.) And just like any Forgeline wheel, the AR1 is available with fully customizable finish options. One-Piece Forged Monoblock Construction Available in 18", 19", 20", 21" and 22" Concave Profile Angular Split Five Spoke Design I-Beamed Spoke Technology Strong Chamfered Machining Details Lightweight Generous Brake Clearance Forged 6061-T6 Aluminum Includes Standard Aluminum Center Cap Customizable Finish Options Legendary Forgeline Quality