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It also serves as a premium quality replacement carburetor for stock 250cc scooters looking for a reliable
See Tech Tip below for identification
139QMB Scooters
Upgrade your CVT with the Polini Performance Variator — widely regarded as the benchmark for 157QMJ-based GY6 scooter tuning
Bolt-on fit — no drilling required on most models
Polini 1st Oversized Piston (70cc Bore Kits); Honda Dio, Sym drum type It also serves as aPolini 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