Racing Cylinder POLINI

for Vespa 50 1
Serie
cast iron
5 ports

38,4mm
stroke 43mm
2 piston ring(s)
with cylinder head
cylinder base turned for V50 1
series

TUNING ROAD – for everyday use and Grade A – perfect repair

For race use only. Not admitted in the area of the German StVZO! Product description
The stairway to tuning heaven: the 50cc POLINI Cylinder Kit is the perfect start to power performance. Robust and solid basis, hot acceleration and sporting features. POLINI has turned out a really sporting cylinder with this tuning kit with lots of surprising features. 5 transfers move with perfect flow. High quality ASSO pistons have 2 piston rings to guarantee a clean seal. Those who are familiar with Dremel and Co. can get even more performance out of this kit.
Conclusion:
POLINI offers a powerful performance 50cc tuning cylinder here. This is the real deal when tuning with original cubic capacity. For those who lust for more power, this cylinder offers a great deal of tuning potential. In this case, the motor casing must be modified. Cast iron/ 38.4mm bore/ 5 transfers/ 49.80cc Cast iron cylinder, 43mm stroke, 5 transfers, divided into 4 auxiliary transfers and a boost port, pistons with 2 piston rings (1x square, 1x L-ring) and boost port side cutout, 6mm exhaust studs, original POLINI cylinder head included in delivery. Compression 9.9:1, including gasket set. Jets should be adjusted. Fits all Vespa 50/PK/XL/XL2 models, except PK automatic. Transfers match the originals, casing must not be modified.