CeramicSpeed OSPW X Pulley Wheel System Shimano GRX/RX 2x11 - Coated Races Alloy Pulley Carbon Cage BLK Weight-336 Designed with a Shimano Micro

Designed with a Shimano Micro Spline body that features smaller and more widely distributed splines to limit cog damage on freehub

Twin Chuck head threads on to Presta and Schrader valves

The Shimano Deore M6000 rear derailleur is designed for aggressive trail riding and uses SHIMANO SHADOW RD PLUS technology for improved chain stability and retention

Quick release design uses single bolt split collar for clamping

Full "Gel In" top cover absorbs shock reduces pressure points and memorizes your riding position

CeramicSpeed OSPW X Pulley Wheel System Shimano GRX/RX 2x11 - Coated Races Alloy Pulley Carbon Cage BLK Weight-336 Designed with a Shimano MicroThe 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 13 tooth upper and 19 tooth lower Cerakote coated aluminum pulley wheels with Grade 3 Silicon Nitride balls Robust cage crafted from polyamide and carbon fiber for durability and light weight Coated bearing races increase bearing service life by increasing