ROCKSHOX rear shock ´´VIVID Coil Ultimate RC2T´´ spring:steel spring damping:RC2T Touchdown technology adjustment:external rebound, external high speed / low speed, hydraulic bottom out, compression:2-stage:open / hard material:shaft and housing made of aluminium.SPECIFICATIONS:-205 x 60mm, attachment:standard shaft, trunnion body, incl.hardware (8 x 40), for Trek Fuel EXE 2023+.