Polini cast 75cc Cylinder Kit (Vespa 50) matte you must manually verify valve-to-piston

you must manually verify valve-to-piston clearance by rotating the crankshaft by hand before attempting a startup

NCY 20x12mm roller weights for Yamaha 125cc CVT scooters

Fits 2-valve cylinder heads on GY6 QMJ157

Metropolitan (CHF50)

you must upjet your carburetor and modify your airbox for increased airflow

Polini cast 75cc Cylinder Kit (Vespa 50) matte you must manually verify valve-to-pistonA good, inexpensive upgrade for those pokey Vespa 50s. Works very well with a Performance Exhaust Pipe. Or a 16 16 carb! ***PLEASE NOTE*** Performance upgrades are considered racing parts and are not covered by warranty. There are too many variables involved with user installed parts, and pushing the limits of your engine tends to wear parts faster. Use at your own risk! Not legal for use in California on pollution controlled vehicles. Check local