Upgrades your 1x bike to the familiar ergonomics of a left shift lever. Mimics the position of a left thumb shift lever Works with A2 and B1 generation posts A2 posts have a black return speed adjuster on the remote and no laser etched logos on stanchion by the saddle cradle B1 posts have a black return speed adjuster on the remote and "ROCKSHOX" laser etched logos on stanchion by the saddle cradle Includes 1x Remote Lever, MMX clamp, discrete clamp and bleed fitting