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:

15-tooth upper and 19-tooth lower, aluminum pulley wheels with Grade 3 Silicon Nitride balls
Robust cage crafted from carbon reinforced polyamide
Two spring tension settings
Fits cassettes from 10 to 36-tooth
Coated bearing races
Only compatible with SRAM RED AXS and SRAM Force AXS
Not compatible with SRAM Rival AXS
CeramicSpeed products with coated bearings include a lifetime warranty