PowerStop Disc Brake Kit K8739 Brake Kits for Cars Complete Solutions for Better Stopping Power Power Stop Track Day Brake Kit (Rear) 15 21 Subaru WRX Rallysport PowerStop Mustang Track Day Brake Rotor and Pad Kit; Front TDBK9029 (21. PowerStop TDBK6809 Power Stop 15 19 Ford Mustang Front Track Day Brake Kit Track Day High Performance Brake Pad and Rotor Kit TRACK DAY KIT STAGE 1 KIT FOR TRACK DAY ENTHUSIASTS: ROTORS AND PADS FOR USE W STREET TIRES PowerStop is on a mission to deliver an easy way for any driver to upgrade their brakes no matter where or how they use their vehicle. The difference between the checkered flag and 2nd place is measured in milliseconds. While there are many ways to shave time off your fastest lap, a brake upgrade is one of the best. For weekend track days and HPDE, our Track Day High Performance Brake Kit can take the heat. This kit comes complete with PowerStop Track Day brake pads and Autospecialty rotors, taking the guesswork out of purchasing brakes for track use. As the official brake supplier of Radford Racing School (formerly Bondurant), Track Day brake pads are data driven and tested to provide extreme fade resistance, low thermal conductivity, and consistent pedal feel. The Autospecialty brake rotors are 100% dynamic mill balanced and provide a direct fit solution for your vehicle. Whether you're a seasoned pro or just getting some weekend time on the grid, have confidence and control at every corner with PowerStop Track Day High Performance Brake Kit. Ideal For Beginning Drivers w Street Tires Includes High Quality OE replacement brake rotors High Coefficient Of Friction When Cold; Even Higher When Hot Rotors are precision machined and mill balanced Very Consistent And Stable Modulation Superior Pedal Feel Abutment And Tension Clips; Pin Bushings Incl. Where Applicable Friction Material Composition: Metallic Front Disc Brake Rotor Construction: Vented Front Rotor Outside Diameter: 12. 590 in. Front Rotor Outside Diameter: 319. 90mm Grade Type: Performance Pad Shims Included: No Position: Front Surface Type: Smooth Wheel Lug Bolt Quantity: 5