CeramicSpeed -
The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design. Features a 13-tooth upper and 19-tooth lower, aluminum pulley wheels with Grade 3 Silicon Nitride balls to provide absolute optimization of the rear derailleur Robust cage crafted from polyamide and carbon fiber for durability and light weight Includes hardened steel bearing races Compatible with Record mechanical, Record EPS, Super Record mechanical, Super Record EPS, Potenza mechanical, and Chorus (fits up to 32t cassette) For Campagnolo rear derailleur models that do not feature a B-limit adjustment, it may not be possible to fit a 32t cassette successfully on some bikes Not compatibile with the Campagnolo 12-speed Record and Super Record derailleurs CeramicSpeed Oversized Pulley Wheel System for Campagnolo Derailleurs - Alloy Pulley, Carbon Cage, Black keyword search: OSPWS Largest Cog: 32 Fits Brand: Campagnolo Fits Model: Record , Record EPS , Super Record , Super Record EPS , Potenza , Chorus Drivetrain Speeds: 11 Defined Color: Black