40- and 110-Series headsets and backwards compatible with S and XX Series

This kit comes with everything you need to mount most 12x142 thru-axle bikes on your KICKR indoor trainer

Reflective elements

Chromoly axle with reliable ball-bearing system

maximizing EFFICIENCY in the weakest part of the pedal stroke

SHIMANO M315 Shift Lever - 7-Speed - Right/Rear pickuponly 40- and 110-Series headsets andSHIMANO RAPIDFIRE PLUS Right Shift Lever Clamp Band 7 speed For reliable mountain bike shifting, SHIMANO's SL M315 RAPIDFIRE shift lever is suited to quick shifting, giving riders the ability to downshift three gears in one stroke. Light shifting operation, wider compatibility, and suitable for internal cable routing Slim main lever body RAPIDFIRE PLUS Streamlined cockpit experience Gear display positioned below the handlebar Numbered gear display