Kogel 12/12T Oversized Derailleur Pulleys for SRAM 12 Speed Road - Full Ceramic

Why Go Full Ceramic on SRAM 12-Speed Road Pulleys?

Kogel's 12/12T Full Ceramic Oversized Derailleur Pulleys for SRAM 12-speed road represent the top of the pulley upgrade ladder, running on full ceramic bearings without any lubrication required. These bearings are guaranteed to spin a minimum of 15 seconds when flicked by hand, a benchmark Kogel has held since introducing their first full ceramic pulleys in 2015. Compatible with Shimano 11-speed and Campagnolo 12-speed derailleurs as well as SRAM eTap 11 and 12-speed, these pulleys deliver meaningful efficiency gains across a wide range of road drivetrains.

The oversized 12/12T diameter reduces chain wrap angle at both jockey wheels, lowering total drivetrain friction compared to stock pulleys in a way that compounds over long efforts and high mileage. Built with aluminum cogs and running on unlubricated full ceramic bearings that shed water and resist contamination, these pulleys perform equally well on a dry criterium circuit or a wet spring classic. If you've already done the bottom bracket and chain upgrades, these are the next logical friction reduction.