The Oversized Pulley Wheel System (OSPW System) offers increased drivetrain efficiency with two 17-tooth alloy pulley wheels and extremely low friction pulley bearings.
Grade 3 Silicon Nitride balls
Hardened races
Reinforced polyamide cage and non-contact seals
Hand built in Denmark
Carbon fiber cage
*Not compatible with 12-speed derailleurs
Express delivery and return policies
Free shipping on orders over $30
Processing time: 1-2 Days
Shipping time: 3-5 Days(According to the logistics method and delivery address)
Items can be returned or exchanged within 30 days !
