CeramicSpeed OSPW X Pulley Wheel System Shimano XT/XTR 1x12 - Alloy Pulley Carbon Cage BLK ModelNumber=K0443 Spacers sold seperately

Spacers sold seperately

300 tpi SuperPoly casing with a layer of puncture protection underneath the tread

4 Tubeless Folding Black Competition

Sold as a Pair Size X-Large

CeramicSpeed OSPW X Pulley Wheel System Shimano XT/XTR 1x12 - Alloy Pulley Carbon Cage BLK ModelNumber=K0443 Spacers sold seperatelyThe 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 14 tooth upper and 18 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 Compact cage design