split second cpc system shimano 12speed r8100 r8150 r9200 r9250Delivery in 3 5 business days (EU) Finance available at checkout with humm by flexifi. This product is composed of a carbon cage and two 7075 aluminum pulleys (14 & 17 tooth) with fully sealed ceramic bearings. Designed by the Split Second Design team, the ceramic rear derailleur improves the fluidity of your drivetrain, enhancing the efficiency to satisfy even the most meticulous riders. Made utilizing extremely high end materials, it contains ultra