Deore XT Pulley Set M8100 R559 Fits most disc brake lockrings

Fits most disc brake lockrings with 12 internal splines from Shimano® and other brands

The keyring attachment is an option for those who like to have a multi-tool on or off the bike for everyday-carry needs

Built in Canada and designed with real riders in mind

Room to nest 4 oz IsoPro™ fuel canister (sold separately)

Alert motorists to your presence as soon as possible with daylight visibility up to 1 mile

Deore XT Pulley Set M8100 R559 Fits most disc brake lockringsDescription The Shimano RD M8100 Tension and Guide Pulley Set is a genuine Shimano service part made to refresh drivetrain performance on Deore XT rear derailleurs. If your shifting feels rough, noisy, or your pulleys are worn down from mileage and grit, this is the correct replacement kit from Shimano. This pulley set is listed by Shimano as a Pulley set for RD M8100 and is specified as compatible with RD M8100 SGS and RD M8120 SGS rear derailleurs.