CeramicSpeed OSPW X Pulley Wheel System Shimano GRX RX820 2x12 - Aluminum Pulley Carbon Cage BLK CheckoutSpec= Reb29/comp25 }Park Tool UP-SET Pick Up

}Park Tool UP-SET Pick Up Set Blue

This is a pack of 2 Sport/Asthma filters

High quality TRP PressFit bottom brackets are designed to provide smooth pedaling in the most challenging conditions

Road TCS: Sealant optimized supple casing with folding TCS aramid bead and Distance + rubber compound

CeramicSpeed OSPW X Pulley Wheel System Shimano GRX RX820 2x12 - Aluminum Pulley Carbon Cage BLK CheckoutSpec= Reb29/comp25 }Park Tool UP-SET Pick UpThis OSPW X system for Shimano GRX RX820 2x12 speed rear derailleurs is built for gravel and cross disciplines and meets the needs for durability low friction and longevity. The four spring tension settings allow customised setup based on ride conditions and the handbuilt OSPW System offers custom molded carbon fiber cage for lightweight and durability. CeramicSpeed OSPW Systems reduces friction 35 40% over stock pulley configuration. Largest Cog 36