Whether road bike, gravel bike, or e-MTB - the SeatSwitch V2 is the perfect companion for challenging climbs and long tours.The benefits are an optimal climbing position, less pressure on sensitive areas, and more efficient power transfer. You'll sit better, ride with more control, and climb longer, faster, and with less pain.- Saddle angle adjuster for dropper seatposts offers 2 positions and 6 degrees of adjustment, actuated with a small lever under the saddle nose - Nose of the saddle will drop about 14mm to put riders in the optimal position for climbing - Fits standard 7mm saddle rails - Standard Seatswitch Type 1 fits Bike Yoke, Manitou, Turnon, and E*thirteen seatposts. - Shim Type 1 is needed to fit OneUp V1 & V2, PNW Loam (2020), Coast (2021), & Pine, Raceface Aeffect R (2019), Chester, Next SL, TranzX - Shim Type 2 fits Cannondale Downlow, Crankbros Highline 3, e*thirteen Vario, FSA Flowtron, Giant Contract Switch, KS EXA Form 900i, Lev Integra, and Rage, Manitou Jack, Rockshox Reverb Stealth, SDG Trellis V1, XFusion Manic, and more - Shim Type 3 fits Fox Transfer (2020-2024) and Raceface Turbine R - Shim Type 4 fits Rockshox AXS posts