Shimano 12-Speed Road Ceramitech OS Pulley Set (12T upper/14T lower, set of 2)

  Info Product Intro Vid Maintenance Vid Rock solid chain control means crisper shifts while Ceramitech bearings channel all your hard work to the ground. This Shimano ceramic pulley set features a DELRIN® 510GR construction, a fiber reinforced polymer specially suited to high strength situations where resistance to deflection is paramount, such as every time you shift. The Ceramitech bearings are in-molded for absolute security and durability as well as ease of maintenance. This Shimano ceramic pulley set blows the stock pulleys away when it comes to spin, and the oversize diameter reduces chain pin working angles to eliminate every bit of friction possible. These pulleys are specifically designed to FIT Shimano 12-speed road drive trains. The 12-speed Dura-Ace pulleys are ONLY compatible with: Dura-Ace R9200 series You will choose our DURA-ACE option. The 12-speed Ultegra/105/GRX pulleys are compatible with: Ultegra RD-R8100 series 105 RD-R7100 series Shimano GRX RD-RX820 (mec