247 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 StopTech 14” Rear Brakes 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 “Adhesive Technology” Pads … and have AMAZING 3600# of braking force. These are the Mac Daddy of Track Car Brakes. No Fade. Quick Release. Excellent Brake Modulation Characteristics. In short … the Best Brakes. (Racing Brakes = No Parking Brake) Track Brakes