CeramicSpeed OSPW X Pulley Wheel System Shimano GRX RX820 2x12 - Coated Races Aluminum Pulley Carbon Cage BLK MFPN=BX-BL130DIPR-BK Fully sealed - Inboard full

Fully sealed - Inboard full contact lip-seal

Headlight 125g taillight 53g Lumens Rear 20 Lumens Front 700 Recharge Type USB Battery Li Ion Weight 125/25

Resin top shell

2-piece floating design allows the laser cut 410 stainless steel outer to expand separately from the CNC machined center to handle high temperatures without warping

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CeramicSpeed OSPW X Pulley Wheel System Shimano GRX RX820 2x12 - Coated Races Aluminum Pulley Carbon Cage BLK MFPN=BX-BL130DIPR-BK Fully sealed - Inboard fullThis 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