Raises by 1.8" (45 mm) the height of Forward Adjustable Riser (860201320) on the REV Gen4 platform. Compatibility: All models except the Summit and Freeride Backcountry (Backcountry, X, X-RS), Renegade, MXZ: Cable 860201880 required for 2-strokes 2017-2018 vehicles. Backcountry, Renegade (Adrenaline and Enduro), MXZ (TNT and Blizzard), Grand Touring (Sport) & Expedition (Sport, LE and Xtreme): Fits only with 860201320