Shimano CN-HG71 Chain drumbeat21-2211 - Optimized airflow intake vents

- Optimized airflow intake vents and channelled ventilation

whether youre racing the clock or just cutting loose with friends

- The 100-25D Micro-Adjust clamp grips nearly any tube from 7/8 to 3 (23-76mm)

hydraulic brakes and a dropper post

for an unmatched blend of performance and style

Shimano CN-HG71 Chain drumbeat21-2211 - Optimized airflow intake ventsHyperglide (HG) series 7 or 8 speed compatible chain, recommended for 1995 and earlier Deore LX STX RC and 1999 and earlier 105 drivetrains HG technology has chamfered inner plates to optimise shifting performance on HG sprockets Durability is assured through a chromising treatment on link pins, and the heat treatment of rollers, pins, and plates Mushrooming of the pins gives unsurpassed side plate retention, enabling the chain to far exceed the BS