Polini is one of the big names in 50cc scooter tuning, and is also one of the leading manufacturers of tuning parts for Vespa, modern and vintage. Cylinders, intake manifolds, exhausts, air filters, carburetors, crankshafts and more - everything you need to boost the performance of your Classic Vespa.
This Polini Primary Transmission 22/63 helical Vespa 50cc PK / Special to change the gear ratio of your transmission.
Higher or lower gear ratio might be the deciding factor in how your scooter will perform. A higher ratio (shorter transmission) will make the engine reach maximum horsepower more quickly, meaning acceleration will be improved, sacrificing a bit of top speed. A lower gear ratio (longer transmission) has the opposite effect - higher top speed and slower acceleration.
This is a complete transmission with 22 / 63 gear ratio.
- reinforced primary transmission
- gear ratio 22 / 63
- helical (angled teeth)
- Additional Information
Name Polini Primary Transmission 22/63 helical Piaggio Vespa 50 PK / Special Item No. P202.1219 Brand Polini Type Primary
- Fits to (33)
Your product goes with the following manufacturers and their models:
APE 50cc (TL1)
50cc N 1963 - 1971 (V5A1T), 50cc N 1989 (V5X5T), 50cc PK 1982 - 1984 (V5X1T), 50cc R 1969 - 1983 (V5A1T), 50cc Rush 1988 (V5X4T), 50cc S 1963 - 1984 (V5SA1T), 50cc Special 1969 - 1972 (V5A2T), 50cc Special 1973 - 1975 (V5B1T), 50cc Special 1975 - 1983 (V5B3T), 50cc Sprinter 1971 - 1979 (V5SS2T), 50cc Super Sprint 1965 - 1971 (V5SS1T), 90cc 1963 - 1984 (V9A1T), 90cc Racer 1971 - 1974 (V9SS2T), 90cc Super Sprint 1965 - 1971 (V9SS1T), 100cc Sport 1978 - 1984 (V9B1T), PK 50cc S 1982 - 1984 (V5X2T), PK 50cc S Automatic 1984 (V5A1T), PK 50cc S Elestart 1983 - 1984 (V5X2T), PK 50cc XL 1985 (V5X3T), PK 50cc XL Elestart 1985 (V5X3T), PK 50cc XLS 1985 (V5S2T), PK 80cc S Elestart 1983 - 1984 (V8X5T), PK 100cc S 1982 - 1984 (V9X1T), PK 100cc S Elestart 1983 - 1984 (V9X1T), PK 100cc XL 1986 (V9X2T), PK PKS PKXL 50cc SS (V5S1T), PK PKS PKXL 50cc XL2 (V5N1T), PK PKS PKXL 50cc XL2 HP (V5N2T), V50 V90 PV ET8 50cc Special Elestart (V5A3T), V50 V90 PV ET10 50cc Special Elestart (V5B2T), V50 V90 PV ET12 50cc Special Elestart (V5B4T), V50 V90 PV ET14 50cc SR 1975 (V5SS2T)