TBM Brakes afford racers one of the lightest and highest performing brake setup on the market. These brakes have proven themselves in every realm from Top Fuel Dragsters to Hot Rod Drag Week and everything in between. TBM is quickly becoming the winning edge in brake system design. With a revolutionary design TBM Brakes has lower drag and friction than competitors. Lower rolling resistance means quicker ET and better overall performance as well as longer pad life. This kit uses the revolutionary F3 Calipers. These calipers offer substantially greater stopping force than competitive calipers which allows replacing dual caliper systems with single caliper f3 combinations. This rear brake kit is for a Symmetrical w/ 3.350 bearing Style Bearing End rearend. Included in this kit:(2) F3 Calipers(2) 11.50"x.375 rotors(2) aluminum rotor hats(2) sets #85 pads(2) sets caliper mounting brackets and hardwareFor custom bolt pattern please contact us directly, otherwise OE factory bolt pattern will be issued. Note: These brakes require less volume. To optimize brake performance we suggest a 7/8 or 1" bore dual master cylinder. This will increase pressure and therefore clamping force.