Crankcase POLINI POLINI For Race Piaggio Ciao/ Bravo/ Si
Article information
Polini reed crankcase For Race for Piaggio Ciao and Si.
Polini developed a new reed crankcase to house cylinders with 3 or 4 studs with the aim to increase the performance compared to the existing crankcases.
Until now it was only possible to fit carburetors of 15mm maximum because of the limited space for the crankcase. With the new Polini reed crankcase For Race it is possible to mount carburetors up to Ø21 with an adequate flow, which allows better performance and greater grit to the engine.
The crankcase is made of die casting aluminium and has been studied to fit both Piaggio Si and
Ciao. Both models need the pedals’ removal. The SI does not require a modification for the engine housing, but the original frame opening os the Ciao needs to be slightly enlarged.
The new Polini reed crankcase For Race for Piaggio Ciao and Si allows housing both 3 and 4 stud cylinders, but Polini suggests using 4 stud cylinders.
It is possible to assemble the new engine crankcase with the original electronic ignition, but Polini recommends using its own and full circle crankshafts.
The carbon reed valve has 4 petals, while the rubber manifold can be fitted both on Polini CP or DellOrto PHBG carburetors.
It is possible to fit the crankcase with the new Ø47 cast-iron Polini cylinder with 4 studs.
Specifications
Part number Polini | : | 170.0201 |
Part | : | Crankcase |
Fits
Crankcase POLINI POLINI For Race Piaggio Ciao/ Bravo/ Si fits the following vehicles:- Gilera Citta 50 AIR 2T 1982-2002
- Piaggio Boss 50 AIR 2T 1988-1989
- Piaggio Boxer 2 50 AIR 2T 1972-1978
- Piaggio Boxer 50 AIR 2T 1970-1972
- Piaggio Bravo 50 AIR 2T 1973-1998
- Piaggio Bravo 50 AIR 2T E1 1999-2001
- Piaggio Ciao 50 AIR 2T 1967-1984
- Piaggio Ciao 50 AIR 2T E2 2002-2005
- Piaggio Ciao Mix 50 AIR 2T E1 1999-2001
- Piaggio Ciao PX 50 AIR 2T 1985-1998
- Piaggio Grillo 50 AIR 2T 1989
- Piaggio Grillo A.E. 50 AIR 2T 1990-1996
- Piaggio Si 50 AIR 2T 1978-1998
- Piaggio Si Mix 50 AIR 2T 1999-2001
Additional products
Recommended products
Spare parts