Yokomo S4-S192-25 13mm Shock Piston 1.9 x 2 Holes 2.5mm 2pcs for SO2.0 and MO2.0

These two 13mm shock pistons use two 1.9mm oil passages and a 2.5mm thickness for SO2.0 and MO2.0 dampers. The piston specification changes oil flow through the damper, making it a useful setup option for refining suspension response. Install as a matched pair with the appropriate oil and shock components.