FEATURES:

Cnc machined pulley wheels

12t & 16T models compatible with 10/11/12 speed systems.

Full Ceramic Bearings

Full ceramic Silicon Oxide races ensure

Unrivalled reliability and performance.



G5 grade silicon nitride –Si3n4 balls fitted to every bearing.

Cnc pulley wheels bolts  included

All units hand assembled in the UK.

2 year warranty*