RockShox Reverb Main Piston/Shaft, 420x125mm EA Dropper Seatpost Part

Fits A1-A2 generation externally routed Reverb seatposts For "A1" designated posts, 2010-2012 A1 posts have a silver return speed adjuster on the remote and no laser etched logos on stanchion by the saddle cradle For "A2" designated posts, 2013-2016 A2 posts have a black return speed adjuster on the remote and no laser etched logos on stanchion by the saddle cradle