Cylinder -POLINI 63 cc Racing Ø43mm- Piaggio Ciao, Bravo, Boxer (gudgeon pin = Ø 10mm)

The Polini Racing is the improved version of the well-known Polini 43mm cast cylinder that has been on the market for years.
The Racing version impresses with better timing and larger overflow channels than the normal version. The cylinder is delivered incl. head and necessary mounting material.
It fits on the original engine cases as well as on the Polini Speedengine.

With a larger carburetor, a crankshaft with modified timing
and a different exhaust, even the last bit is tickled out of the kit
.