Piston DOPPLER ER1 by VERTEX Ø39,84mm for kit 50cc on derbi euro 3 & 4

For your 50cc Ø40mm DOPPLER ER1 kits, here is the replacement piston by VERTEX with the exact dimension 39.84mm. High quality, it is the single segment model with side grease nipples improving sweeping. Delivered complete with its hard chrome domed end segment, its axis, its clips. Unique size.