Yokomo S4-S202-25 13mm Shock Piston 2.0 x 2 Holes 2.5mm 2pcs for SO2.0 and MO2.0

These two 13mm shock pistons use two 2.0mm oil passages and a 2.5mm thickness for SO2.0 and MO2.0 dampers. Their larger oil passages provide a distinct damping option when adjusting suspension feel for track conditions. Use the pair with compatible 13mm shocks and select oil viscosity to complete the setup.