Rock Shox SoloAir Travel Adjustment Air Shafts. Features: Air piston shaft assembly only, (Minimum required part to adjust travel on 2013+ Reba, Sid-B, Revelation, Pike, Yari and Lyrik SoloAir forks) RS-1 (29") uses the same air shaft as the 26" SID/Reba Does not include top cap, top out bumper, negative air assembly, wavy washer or stanchion c-clip For complete SoloAir assemblies see Air Spring Kits Not compatible with Dual Air forks Specs: Model: Reba/SID-B/Bluto Wheel: 27.5" (29" 2014+) Travel: 100mm, 110mm, 120mm