15 Rear Brake Application: ➢ Speedway Engineering Mod-Lite Floater Rear End with Aluminum Hubs ➢ Speedway Engineering Grand National Rear End Floater with Steel or Aluminum Hubs ➢ Other Brands of Grand National Floater Rear Ends ➢ Requires Welding Bracket to Axle Tubes Part Numbers, Caliper Color & Pricing: STB #84.RSR.0701.51* Black $2895 STB #84.RSR.0701.71* Red $2895 STB #84.RSR.0701.R1* Trophy $3595 *Trophy Calipers are fully CNC Machined for lightening & style then Gun Metal Gray Anodized Speedway FLoater Rear end – no parking brake The ST40 4-Piston Calipers, match perfectly with the front ST60s. We were able to design the BEST rear braking system possible that fits Grand National & Mod-Lite Floater Rear Ends. I utilized larger piston area & the total braking force is amazing! We run a much less aggressive pad … StopTech’s SR30 “Adherent Technology” Pads … and have AMAZING 4150# of braking force. These are the Mac Daddy of Road Race & Track Car Brakes. No Fade. Quick Release. Excellent Brake Modulation Characteristics. In short … the Best Brakes. (No Parking Brake) Brake Lines Included rear brakes