Polini 1st Oversized Piston (70cc Bore Kits); Honda Dio, Sym GO MAX ELECTRICAL EQUIPMENT 157QMJ-based 125cc/150cc/169cc engines: 157QMJ

157QMJ-based 125cc/150cc/169cc engines: 157QMJ

High-tensile synthetic rubber resists stretching and edge-fraying

This accessory provides an immediate defense system for daily outdoor parking layouts or long-term seasonal winter storage blocks

Adjustable Cutting Diameter: Engineered specifically for GY6 125cc and 150cc (QMI152/QMJ157) engine blocks to facilitate 170cc

The factory-molded white sidewalls resist yellowing and weathering

Polini 1st Oversized Piston (70cc Bore Kits); Honda Dio, Sym GO MAX ELECTRICAL EQUIPMENT 157QMJ-based 125cc/150cc/169cc engines: 157QMJPolini replacement piston for 70cc sport 12mm CPI (46mm) cylinder kits for Honda Dio, SYM DD50 and 2T Minarelli engines. NOTE: This piston is not compatible with Polini Sport 10mm (47. 6mm) cylinder kits. Specifications: Piston: 47mm Wrist pin: 12mm Includes: piston, piston rings, circlips, wrist pin Compatibility: Honda Dio SYM DD50 Minarelli 2T horizontal engines About Polini: For over 50 years, Polini has stood unparalleled in the racing and tuning