This bicycle pulley set works with all GS (mid length) cages and SGS (long) cages. If you have an SGS cage, you should run the 12/14T's here instead.
Rock solid chain control means crisper shifts while Ceramitech bearings channel all your hard work to the trail.
Each cog set features 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 a chain up and down a cassette caked with mud and grit on a Di2 bike. Delrin shrugs off wear that grinds aluminium pulleys into nothing, which is why Shimano and Sram both use Delrin in their own pulley sets. The Ceramitech bearings are in-molded for absolute security and durability as well as ease of maintenance.
These Ceramitech Shimano 12T pulleys blow stock pulleys away when it comes to spin, and the oversize diameter reduces chain pin working angles to eliminate every bit of friction possible. The aggressive tooth pattern clears debris from the system rapidly and efficiently to prevent mis-shifts and unintended chain derailments. Note: The Shimano MTB ceramic pulley sets come pre-lubed.
These bike pulleys are compatible with:
ALL SHIMANO 10 AND 11 SPEED MOUNTAIN BIKE GROUP SETS, MECHANICAL AND Di2.
It's a mystery to us why major manufacturers ignore bottom bracket and derailleur pulley performance and continue to pump out under-performing products that sap wattage from riders who are working like mad to get faster. You have the BBInfinite bottom bracket with Ceramitechs already, and you've experienced the tremendous gains. It's time for another step forward toward your goal. Get the most out of your ride by riding with these Shimano 12T pulleys.
BBInfinite's 12T MTB ceramic pulleys have a 1-Year warranty.