Ceramicspeed Ospw Shimano Grx/ultegra Rx 2x Cage

CeramicSpeed OSPWX System Engineered to reduce friction up to 35-40% over a stock pulley configuration, the CeramicSpeed OSPWX System is a must-have for riders seeking every possible performance gain. The custom-moulded design is ultralight, extremely durable and houses two oversized pulleys to provide reliable chain retention and drag-free perfor... moremance. Hand-built in Denmark, this system is used by some of the world’s fastest cyclists, proven on the most demanding stages of the sport. Includes Complete OSPW System for your choice of rear derailleur CeramicSpeed Pulley Oil, 15ml Sticker Sheet