HRD/HRR Hydraulic Brake Master Piston Assembly Kit Description:

The HRD/HRR Hydraulic Brake Master Piston Assembly Kit contains the parts necessary to restore the functionality and performance of select SRAM road and gravel bike style shifter/brake lever assemblies. If the brakes are losing fluid within the shifter/brake lever assembly this kit will restore the sealing within the master piston, resulting in less frequent bleeding procedures and restored power. This kit will include a replacement bleed screw and bleed screw o-ring.

Specifications:

• Compatibility: SB-700-HRD-B1 | SB-700-HRR-B1 | SB-FORCE-HRD-A1 | SB-FORCE-HRR-A1 | SB-RED-HRD-B1 | SB-RED-HRD-B2 | SB-RED-HRR-B1 | SB-RIVAL-HRD-A1 | SB-RIVAL-HRR-A1

Each Order Includes:

• (1) Hydraulic Brake Master Piston
• (1) Master Piston Spring
• (1) Bleed Screw
• (1) Master Piston Stop Plate
• (1) Master Piston Stop Plate Screw
• (4) Cover Screws

This product was added to our catalog on August 4, 2025