Description
Crankshaft
Polini Racing
(rotary valve) 60mm stroke,
105mm conrod-
Vespa PX125, PX150
Description
The Polini crankshafts are very cleanly finished and convince with their well thought-out details:
- flow-optimized control cheek
- well balanced
- stable connecting rod
- extended inlet control angle
- available with 57mm (std) and 60mm stroke
- trunnion: 20mm (except PX200, 57mm stroke: 22mm)
The width of the sealing surface on the rotary valve cheek is 15.8mm wide as on the original PX125/150 shaft.The PX200 version has here 16,8mm
The extended inlet control angle results in a larger time cross section and allows a significant increase in power over the whole speed band.
Very nice stable shaft which provides more bandwidth in every engine.
Fits the following vehicles
- Vespa (Motovespa) Vespa 125 CL (engine 9CL)
- Vespa (Motovespa) Vespa 150 CL (engine 9NC)
- Vespa (Motovespa) PX 125 Iris (engine 99M)
- Vespa (Motovespa) PX 150 Iris (engine 75M)
- Vespa (Piaggio) 125 PX E FL (2017-, ZAPM74100)
- Vespa (Piaggio) 150 PX E FL (2017-, ZAPM74200)
- Vespa (Piaggio) 125 PX E FL (2016-, ZAPM74100) special edition "70 years"
- Vespa (Piaggio) 150 PX E FL (2016-, ZAPM74200) special edition "70 years"
- Vespa (Piaggio) Cosa 150 CL (VLR1T)
- Vespa (Piaggio) Cosa 150 CLX (VLR1T300)
- Vespa (Piaggio) Cosa 150 FL (VLR2T)
- Vespa (Piaggio) P 150 X (VLX1T, -1980)
- Vespa (Piaggio) PX 150 E FL (VLX1T, 1984-1997)
- Vespa (Piaggio) PX 150 E (VLX1T, 1981-1983)
- Vespa (Piaggio) Cosa 125 CL (VNR1T)
- Vespa (Piaggio) Cosa 125 CLX (VNR1T300)
- Vespa (Piaggio) Cosa 125 CLX (VNR1T301)
- Vespa (Piaggio) P 125 X (VNX1T, -1983)
- Vespa (Piaggio) PX 125 E FL (VNX2T, 1984-1997)
- Vespa (Piaggio) PX 125 E FL (ZAPM09300, 1998-2000)
- Vespa (Piaggio) PX 125 E FL (ZAPM09302, 2001-)
- Vespa (Piaggio) PX 150 E FL (ZAPM09400, 1998-2000)
- Vespa (Piaggio) PX 150 E FL (ZAPM09401, 2001-)
