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Ford S197 Mustang GT500 ('13–'14) Rear Replacement Rings Refresh the stopping power on your 2013–2014 Shelby GT500 with Girodisc Rear Replacement Rings. These direct-fit rings let you reuse your existing Girodisc aluminum hats, restoring like-new braking performance while keeping costs and downtime low. Each pair arrives with new hardware and clear instructions for a clean swap. Engineered to run hard and cool Girodisc rings are machined in the USA from proprietary cast iron and use a race-developed curved vane design that pumps cooling air through the disc. The result is consistent pedal feel and fade resistance whether you’re carving back roads or running open-track sessions. Features Sold as a pair; includes new replacement hardware Direct replacement for existing Girodisc two-piece rear rotors Reuse your Girodisc aluminum hats to save money and time Proprietary U.S.-poured cast iron for durability and heat control Curved vane internal design promotes efficient cooling Precision machined and finished in the USA Vehicle Fitment 2013–2014 Ford Mustang Shelby GT500 (S197 chassis) equipped with Girodisc two-piece rear rotors Ford S197 Mustang GT500 ('13–'14) Rear Replacement Rings FAQs: Do these fit OEM or other brands’ two-piece rotors? These rings are designed only for Girodisc hats and will not fit OEM two-piece systems or other aftermarket brands unless specifically noted. What’s included in the box? Two replacement rings with new hardware and installation instructions. You’ll reuse your existing Girodisc aluminum hats. When should I replace my rings? Replace when the rotor reaches minimum thickness or if you see heat checking, cracks, or other signs of distress during inspection. Do I need to replace both sides at once? Yes, replacing rings in pairs keeps braking performance balanced side-to-side. Can I install these at home? Experienced DIYers can perform the swap, but professional installation is recommended to ensure correct fastener torque and safety. Do I need new pads? It’s a good time to inspect pads; switching to a compound matched for iron rotors can optimize bite and wear.

Girodisc GD355.32.62 355x32mm Replacement Rotor Rings (Wide Annulus) The Girodisc GD355.32.62 Replacement Rotor Rings (Wide Annulus) are precision-engineered to replace worn iron rings on Girodisc two-piece brake systems using the D62 hat configuration. These 355x32mm rings are crafted for performance vehicles utilizing Brembo big brake kits that require a wide annulus pad contact area. Restore Performance with Genuine Girodisc Components Manufactured in the USA from Girodisc’s proprietary cast iron alloy, these rings are engineered for maximum strength, heat resistance, and consistent friction. The wide annulus design provides a larger pad contact area for improved wear balance and braking stability. Each rotor features directional curved vanes that act as a centrifugal pump, pulling cool air through the disc to minimize fade and maintain optimal performance under track conditions. Features • Dimensions: 355mm x 32mm (D62 Wide Annulus)• Direct replacement rings for Girodisc two-piece D62 systems• Designed for use with wide annulus Brembo calipers and pads• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for maximum cooling• Reuses Girodisc aluminum hats• Includes new hardware for installation• Sold/priced per pair Vehicle Fitment The Girodisc GD355.32.62 355x32mm Replacement Rotor Rings (Wide Annulus) fit Girodisc D62-based systems commonly used on:• Brembo 4-piston and 6-piston big brake kits (355mm applications)• Porsche Cayman / Boxster (Brembo GT 355mm systems)• Subaru WRX STI (Brembo GT wide annulus 355mm setup)• Mitsubishi Evo X with Brembo 355mm upgrade• BMW M2 / M3 / M4 with Brembo 355mm GT kitsAlways verify your hat bolt pattern and pad annulus match the D62 configuration before ordering. Girodisc GD355.32.62 355x32mm Replacement Rotor Rings (Wide Annulus) FAQs What does “wide annulus” mean? It refers to the pad contact area width on the rotor. Wide annulus rotors are designed for Brembo GT calipers using pads with a broader friction face. Can I reuse my aluminum hats? Yes. These replacement rings are designed to bolt directly to Girodisc aluminum hats using the included hardware. Do these include hardware? Yes. Each kit includes a complete set of new bolts, washers, and drive pins for proper installation. Are the rings directional? Yes. Each rotor features left and right curved vane geometry for optimal cooling and airflow direction. Do they fit OEM or other aftermarket hats? No. Girodisc replacement rings are specifically machined for Girodisc D62 aluminum hats and are not compatible with other brands. Are they sold as a pair? Yes. The Girodisc GD355.32.62 355x32mm Replacement Rotor Rings (Wide Annulus) are sold and priced per pair and include a complete hardware kit. Keep your braking system at peak performance with Girodisc GD355.32.62 355x32mm Replacement Rotor Rings (Wide Annulus)—the perfect OEM-quality solution for maintaining the precision, cooling, and durability your Girodisc system was designed for.

Girodisc Corvette C7 Z06 / Grand Sport Rear Replacement Rotor Rings   The Girodisc D2-147 Rear Replacement Rotor Rings are precision-engineered replacements for Girodisc two-piece rear rotors used on the Chevrolet Corvette C7 Z06 and Grand Sport. Designed to restore braking performance and maintain Girodisc’s unmatched cooling efficiency, these rings deliver lightweight strength, balance, and durability for both street and track use. Vehicle Fitment • Chevrolet Corvette C7 Z06 – Rear• Chevrolet Corvette C7 Grand Sport – Rear• Designed for Girodisc two-piece rotor systems• Will not fit OEM or non-Girodisc two-piece rotors High-Performance Construction for the C7 Platform Each Girodisc D2-147 replacement ring is manufactured in the USA using Girodisc’s proprietary high-carbon cast iron alloy, developed for superior strength and thermal stability. The internal curved vane design acts as a centrifugal air pump, forcing cooling air through the disc to minimize fade and maintain consistent braking under the most demanding conditions. Sold as a matched pair, the rings include new hardware and are a direct bolt-on fit to your existing Girodisc aluminum hats. Features • Size: 370mm x 30mm• Direct replacement for Girodisc Corvette C7 Z06 / Grand Sport rear rotors• Proprietary high-carbon iron alloy poured and machined in the USA• Curved vane internal geometry for improved airflow and cooling• Includes full hardware kit (pins, bolts, washers)• Reuses Girodisc aluminum hats• Maintains OEM brake bias and ABS calibration• Sold/priced per pair ($730.00)• Not compatible with OEM or non-Girodisc hats Girodisc D2-147 Corvette C7 Z06 / Grand Sport Rear Replacement Rotor Rings FAQs Can I reuse my Girodisc aluminum hats? Yes. These replacement rings are designed to bolt directly onto your existing Girodisc hats using the supplied hardware kit. Are these compatible with OEM or factory rotors? No. Girodisc rings are designed exclusively for Girodisc two-piece systems and will not fit OEM or other aftermarket hats. What’s included in the kit? Two 370mm rear iron rotor rings (left and right) and all necessary hardware for reassembly. Are the rotors directional? Yes. Each rotor is marked left and right and uses directional curved vanes for optimal cooling and airflow. Do these improve performance over OEM rotors? Yes. Girodisc rotors reduce unsprung weight, improve heat dissipation, and provide consistent braking under high loads, making them ideal for both street and track performance. Are they sold as a set? Yes. The Girodisc D2-147 Corvette C7 Z06 / Grand Sport Rear Replacement Rotor Rings are sold and priced per pair and include all required hardware. Maintain your Corvette’s legendary braking precision with Girodisc D2-147 Rear Replacement Rotor Rings—crafted in the USA for unmatched quality, cooling, and race-proven performance.

Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) The Girodisc GD355.32.52 Replacement Rotor Rings (D52) are precision-built replacements for Girodisc two-piece rotor systems using the D52 configuration. Sized at 355mm x 32mm, these genuine Girodisc rings restore full braking performance while allowing you to reuse your existing aluminum hats and floating hardware, saving time and cost without compromising quality. Precision Engineering for Long-Term Performance Each Girodisc replacement ring is manufactured in-house in the USA from Girodisc’s proprietary cast iron alloy, designed to handle the extreme heat and stress of high-performance driving. The curved vane internal design acts as a centrifugal air pump, increasing airflow through the rotor to reduce operating temperatures and prevent fade. These rings are machined to exact tolerances and include a new hardware kit for a complete, bolt-on installation. Features • Dimensions: 355mm x 32mm (D52 configuration)• Direct replacement for Girodisc two-piece D52 systems• Reuses existing Girodisc aluminum hats• Proprietary cast iron alloy poured and machined in the USA• Curved vane internal geometry for efficient cooling• Includes new hardware for installation• Directional vanes for left and right rotors• Sold/priced per pair Vehicle Fitment The Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) fit Girodisc D52-based two-piece systems used on:• Porsche Cayman / Boxster (Girodisc 355mm D52 kits)• BMW M2 / M3 / M4 (Girodisc 355mm D52 front or rear systems)• Audi S4 / S5 (Girodisc 355mm D52 setups)• Subaru WRX STI with Girodisc D52 355mm conversion• Other high-performance applications using Girodisc D52 hat patternAlways verify your hat pattern and rotor dimensions match the D52 specification before ordering. Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) FAQs What’s included in the kit? Two iron rotor rings (left and right) and a full set of new mounting hardware for reassembly. Do I reuse my aluminum hats? Yes. These rings are designed to bolt directly to your existing Girodisc hats using the included hardware kit. Are they compatible with OEM or other brands? No. Girodisc rings are engineered specifically for Girodisc aluminum hats and hardware. Are the rotors directional? Yes. Each rotor features curved vane geometry for left and right installation, ensuring optimal airflow and cooling. What material are they made from? Girodisc’s proprietary cast iron alloy provides high strength, excellent thermal stability, and consistent friction under extreme conditions. Are they sold as a set? Yes. The Girodisc GD355.32.52 355x32mm Replacement Rotor Rings (D52) are sold and priced per pair, including all required hardware. Restore factory-level braking performance and reliability with Girodisc GD355.32.52 Replacement Rotor Rings (D52)—precision-engineered in the USA for unmatched quality, cooling, and endurance.

Girodisc Ford S197 Mustang Front Replacement Rings Refresh your Ford S197 Mustang’s braking system with Girodisc 355mm front replacement rings. Designed as direct replacements for existing Girodisc two-piece rotor assemblies, these rings restore braking precision and fade resistance for street, track, or autocross applications — all while reducing cost compared to a full rotor replacement. Vehicle Fitment Compatible with:• Ford Mustang GT (2005–2014)• Ford Mustang Boss 302 (2012–2013)• Ford Shelby GT500 (2007–2014)Note: These are friction rings only. They bolt directly to existing Girodisc aluminum hats using the supplied hardware kit. Performance-Built Replacement Rings Each Girodisc replacement ring is precision-cast and machined in the USA from a proprietary high-carbon iron alloy designed for exceptional strength and heat resistance. The 48 curved directional vanes act as a centrifugal air pump, drawing cooling air through the disc to minimize heat buildup and ensure consistent braking performance under heavy use. This design helps eliminate fade and vibration while providing smooth, repeatable braking lap after lap. Features • Direct-fit replacement for 355mm Girodisc two-piece front rotors• Designed for Ford S197 Mustang GT, Boss 302, and GT500• High-carbon cast iron for durability and crack resistance• 48 curved directional vanes for improved cooling• Machined, balanced, and finished in the USA• Includes new floating hardware kit• Sold/priced per pair Specifications • Diameter: 355mm• Position: Front• Material: High-carbon cast iron• Includes: Two replacement rings and full hardware kit• Made in the USA• Sold/priced per pair Girodisc D1-081 Replacement Ring FAQs Do these fit OEM Mustang rotors? No. These are designed only for Girodisc two-piece rotor assemblies and will not fit stock Mustang brake systems. Will these work with my existing Girodisc hats? Yes — these are designed to bolt directly to your Girodisc aluminum hats using the included hardware kit. Are they suitable for track use? Absolutely. Girodisc rotors are engineered for endurance and track environments, offering stable braking performance under extreme heat. Do I need special tools for installation? No special tools are required. Standard hand tools and a torque wrench are all that’s needed to swap the rings and reinstall the floating hardware. Maintain your Mustang’s stopping power with Girodisc D1-081 355mm front replacement rings — built in the USA for strength, performance, and consistent braking you can trust.

Sparco Sprint Race Suit The Sparco Sprint race suit is the latest evolution of the legendary Sprint, redesigned to incorporate significant upgrades. The Sparco Sprint has always offered tremendous fire protection, style and value. The new two-layer construction is lighter and more breathable than the previous model. The Sprint has pre-curved, fully-floating sleeves and multiple stretch panels throughout for better breathability, mobility and comfort. The Sparco Sprint is designed as a classic mono-color suit with subtle contrasting colors. It is available in sizes EU48 to EU66. Sparco Sprint Race Suit Details: SFI 3.2A/5 and FIA 8856-2018 approved Fully-floating sleeves Pre-curved arms Ultra-soft knit arm and leg cuffs (under the outer fabric on the boot cuff) Multiple stretch panels for comfort Available in standard or boot cuff

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

Antigravity Group-51R Lithium Car Battery The Antigravity Group-51R Lithium Car Battery is a game-changer for both performance enthusiasts and everyday drivers. Designed as a direct OEM replacement, it delivers massive cranking power in a lightweight package, all while featuring built-in wireless jump-starting to ensure you’re never stranded again. Lightweight, Powerful, and Smart This innovative lithium battery combines cutting-edge RE-START technology with a complete Battery Management System for unmatched reliability and performance. Whether installed in a Honda Civic, S2000, Miata MX-5, or Nissan GTR, the Group-51R battery provides exceptional starting power, extended life, and substantial weight savings compared to traditional lead-acid batteries. Features • Group 51R OEM automotive case size (direct drop-in replacement)• Dimensions: 9.4 x 5.2 x 8.6 in (238 x 130 x 220 mm)• Available in 24 Ah (Race Use Only) and 30 Ah capacities• High cranking power: 1000 CA (24 Ah), 1200 CA (30 Ah)• Wireless RE-START technology: activate jump-starting from the included key fob• Built-in Battery Management System with over-discharge, over-charge, short circuit, thermal protections, and cell balancing• Ultra lightweight: 70% lighter than lead-acid, with weight savings of up to 40 lbs• LiFePo4 lithium chemistry for safety and durability• Threaded terminals: M8x1.25 Group-51R Key Benefits RE-START Technology: If the battery is ever discharged, the intelligent BMS will preserve just enough energy to restart your vehicle. Simply press the keyfob button, start the car, and drive away—no jump pack or roadside help needed.Full Battery Management: Advanced BMS provides safety circuitry, over/under voltage protection, and cell balancing for a longer life cycle—up to 7–9 years depending on usage and climate.Exact OEM Fitment: Available in standard BCI sizes to fit most performance and passenger cars without modification.Performance Gains: Weight savings of 25–55 lbs improves handling, braking, and acceleration. High cranking power easily turns over engines up to 900 horsepower.Environmentally Safer: No lead, acid, or heavy metals—fully recyclable and safer for your vehicle and the environment. Specifications • Weight: 8.5 lbs (24 Ah), 11.25 lbs (30 Ah)• Size: 9.4 x 5.2 x 8.6 in• Amp Hours: 24 Ah (Race Use Only), 30 Ah• Cranking Amps: 1000 CA / 1200 CA• Nominal Voltage: 12.8 V• Low Voltage Cut-Off: Yes• Positive Terminal: Right Side FAQs: Antigravity Group-51R Lithium Car Battery How does the wireless RE-START function work? If the battery is discharged, the BMS puts it into sleep mode to reserve power. Pressing the keyfob button reactivates the battery so you can start your vehicle without opening the hood. Is this battery a direct replacement for OEM Group-51R batteries? Yes, it’s designed to fit OEM Group-51R dimensions exactly, making it a simple drop-in installation for most vehicles. Can this battery be used in daily driven vehicles? Absolutely. While the 24 Ah version is race-only, the 30 Ah model is ideal for street and performance applications, offering excellent reliability and long life. What vehicles commonly use Group-51R batteries? Common applications include Honda Civics, Honda S2000, Miata MX-5, and Nissan GTR, among many others. NEW! Lightweight Lithium Batteries with Wireless Remote Built-In Jump Starting! Antigravity Batteries has changed the game again with their latest Lithium-ion Car Batteries. The newest RE-START line of batteries offers built-in WIRELESS Jump-Starting! That means if your battery is ever discharged, simply press the button on the provided key fob, start the car, and drive away! No need for a jump starter or roadside assistance. You don’t even have to open the hood—activate it from inside your vehicle! If you want to track your battery status via Bluetooth, you can use the Bluetooth Battery Tracker PLUS (sold separately).

Alpinestars Atom Driver Race Suit The Alpinestars Atom race suit has a two-layer construction with a soft, knitted liner for optimum levels of protection and driver comfort. The Atom combines a twill outer shell and an aramid lining for comfort and breathability. This suit is also equipped with fully-floating arm construction, pre-curved arms and legs, and stretch panels on the crotch, back, and waist for a highly flexible fit. Please note: FIA suits have a standard cuff, SFI suits have a boot cuff Alpinestars Atom Driver Race Suit Details Certified to either the new FIA 8856-2018 homologation standard or SFI 3.2A/5 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 Driver Race 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-resistance Adjustable belted waist ensures a secure fit Anatomical arm, leg and torso patterned paneling for an optimum fit in the driving position Alpinestars exclusive shoulder epaulette construction eases driver extraction in the event of a crash Ribbed, stretchable wrists and cuffs for optimum comfort. Premium YKK double-slider metal zipper Thigh pockets for convenient, peace-of-mind storage Regular fit design Weight: 420 g/m2

Pagid Racing Brake Pad Shape No. 4910 Fits The Following Vehicles: Make Model Build (Year) Front Rear Audi RS6 (C6) [ceramic brakes] 2008 - 10 X Bentley Continental GT [ceramic brakes] 2003 - 11 X Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid Racing Brake RSC 1 compound is for carbon-ceramic brake rotors only. Pagid RSC 1 Compound (Ceramic Rotors Only) A race and track day compound for all known types of ceramic brake discs, RSC 1 is a low metallic resin bonded material containing steel and aramid fibers. This material features good all-round characteristics and is suitable for all types of usage.

Sparco QRT-R Racing Seat 2029 Expiry Ultra-light Sparco QRT Technology at Its Best The QRT-R was the first seat to feature Sparco’s patented QRT ultra-light technology. This QRT Technology gives an unparalleled mechanical strength/weight ratio for fiberglass composite racing seats. QRT Technology gives  weight savings of 7 lbs to 10 lbs per shell. The main benefit is that QRT-R seat approaches the weight of a carbon fiber seat at a price of a fiberglass seat. The QRT-R is the lightest "Medium/Large" size fiberglass seat,  the shell alone weighs only 9.9 lbs (or 15 lbs fully trimmed). The QRT-R has a unique CAD design that features a lower seating position that can fit a larger/taller driver with the exterior dimensions that can fit into smaller vehicles. The QRT-R is FIA approved. Available only in cloth upholstery. Requires QRT side mounts #600QRT for proper mounting. Sparco QRT-R Racing Seat Technology Lightest "Medium/Large" size fiberglass seat on the market Lower seating position that can fit taller/larger drivers Smaller outer dimensions for small vehicle fitment QRT Technology gives an average weight savings of 7lbs per shell FIA 8855-1999 approved Dimensions

Pagid Racing Brake Pad Shape No. 8286 Fits the Following Vehicles: Make Model Years Front Rear Porsche 992 Turbo [ceramic brakes] 2020 +      X Pagid Racing Brake Pads Pagid Racing Brake Pads are engineered for high-performance driving, delivering exceptional stopping power, durability, and control under the most demanding conditions. Trusted by professional racers and performance enthusiasts worldwide, these pads are crafted using advanced friction materials and cutting-edge technology to ensure consistent performance, low fade, and excellent modulation. Whether you're on the track or tackling aggressive street driving, Pagid Racing Brake Pads provide the reliability and confidence you need to push your vehicle to its limits. Pagid Racing Brake compounds are for steel (cast iron) rotors only unless otherwise noted. Pagid RSC 1 Compound (Ceramic Rotors Only): A race and track day compound for all known types of ceramic brake discs, RSC 1 is a low metallic resin bonded material containing steel and aramid fibers. This material features good all-round characteristics and is suitable for all types of usage.

Cobalt Brake Pads Porsche 992 GT3 Cup Car Racing Brake Pads (Front) - 25mm Cobalt Friction Technologies, Inc. is a leading developer & manufacturer of friction compounds for high-performance and professional motorsport disc brake applications. With our industry-leading range of race-proven XR-Series Carbon-Ceramic materials, Cobalt has a solution to meet your most demanding performance requirements, while always exceeding your expectations with superior technical and race engineering support. PASSION The heart and soul of Cobalt Friction Technologies is fueled by our never-ending passion for motorsports. Our teams and drivers continually place greater demands on their equipment, and Cobalt Friction is there to satisfy these demands every step along the way. PERFORMANCE Cobalt Friction's customer-driven research & development is what sets us apart from the competition. Our engineers do not design compounds based on lab results alone or to solely meet overly simplified, uni-dimensional "performance criteria". Rather, we continually "step outside the box" by working with and collecting feedback from our drivers and teams at all levels of professional and amateur motorsports, right there at the race track...week in and week out. When being the best and finishing first is the only option, Cobalt Friction accepts zero compromises, and so do our customers and teams. TECHNICAL EXCELLENCE Cobalt-equipped drivers and teams are backed by race engineering support that is second to none. From the garages at the Rolex 24 at Daytona to the paddock at the SCCA Nationals, Cobalt Friction Technologies delivers the products, knowledge and power to win.

RT RE10*:RE10 is the ultimate endurance race compound offering a balance of excellent stopping power, low thermal conductivity, extremely low pad and disc wear. Utilizing the latest friction material technology, RE10 offers consistent performance under the most demanding of environments. Typical Applications: Professional Endurance Racing, Club Racing, and HPDE on high demand brake platforms *Denotes a "race only" pad. Running a "racing use only" pad on the street could produce excessive noise and dust. Disc wear could be accelerated if driven at cold temperatures or used in the incorrect temperature range. Racing pads are designed to work in specific temperature ranges so it is important to choose the desired compound for the correct environment the vehicle will be used in. Pad Compounds are run on a brake dynamometer over multiple brake applications (stops) to test the materials in a controlled environment for the most accurate data. Wear rates and temperatures can be influenced by car setup, grip levels, track layout/configuration and many other variables.