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