Extras:  For 27

50-51mm chainline depending on crankset

SHIMANO's SL-M315 RAPIDFIRE shift lever is suited to quick shifting

Compatible with almost all MTB front shifters

Generation:  Altus M313

SMITH Hardline Carbon Downhill Helmet - MIPS Size:- Large (59-62cm) Extras: For 27Three, two, one. Dropping. The Smith Hardline Carbon Downhill Helmet is feature packed and designed for taking on the rowdiest lines on the planet. The fully constructed carbon weave shell includes complete KOROYD coverage and is equipped with a Mips Safety System for maximum impact protection. Built into the bottom of the helmet is a Smith designed collarbone impact protection zone to help mitigate the risk of helmet to collarbone contact in a crash.