The same hybrid ceramic cartridge bearings used in the new SRAM Red Rear Derailleur’s upper and lower pulleys are also available as an upgradable accessory to “hop up” your current drivetrain. Make the leap to reduced friction, increased stiffness, lighter weight, and added durability with this secret weapon.

Features:
• Weight: 12 grams each
• Material: Ceramic Balls/Stainless Steel Races
• Compatibility: SRAM Red, SRAM Force, and SRAM Rival Rear Derailleurs