RockShox Lyrik RC Dual Position 180mm/150mm travel. 27.5" wheelsize, 15mm Boost spacing. $600 shipped within continental US.

This came brand new on a bike that I'm switching over to 29" wheels and so it needs to go. Has been ridden around half a dozen times - one small scratch on a decal, and the bottom of one leg (from shipping to me), but otherwise as-new and works perfectly.