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.
Ceramic Balls/Stainless Steel Races
SRAM Force/Rival/Apex Rear Derailleurs
Buy SRAM Components from Chain Reaction Cycles, the World's Largest Online Bike Store.