HOLLOWcage Oversized Derailleur Pulley Cage for Shimano Ultegra 8150 Elite so it retains preload far

so it retains preload far better than the competition and is impervious to the ill effects of load spikes from large hits and heavy braking

while the traditional bead hook ensures maximum compatibility with all tube-type and tubeless tires on the market

Lace and hook-and-loop closures

smooth block-in-block transition knobs provide grip and support through turns

Go further - reduce fatigue from bumps and vibrations

HOLLOWcage Oversized Derailleur Pulley Cage for Shimano Ultegra 8150 Elite so it retains preload farThe absoluteBLACK's HOLLOWcage for Shimano Ultegra 8150 12 speed derailleurs makes the 8150 drivetrain whisper quiet. It features a carbon polymer mono plate construction with bespoke, oversized, full ceramic bearings and one of the most advanced silencing pulleys ever made. Designed for use with Shimano Ultegra 8150 drivetrains Fits up to a 34t cassette The Silent Xring Pulley dampens the chain impact on the guide pulley teeth, eliminating the