POLINI 221 Aluminium Sport Kit With Crankshaft (60mm Version) Vespa PX200, RALLY200
The updated Polini 210/221cc aluminum cylinder has greatly improved upon its previous version, featuring a bolt-on exhaust flange and a piston from Meteor (Italy). The kit maintains a high level of quality, making it virtually indestructible and nearly indistinguishable from its Bologna prototype. This update solidifies Polini's reputation as an expert in the industry. The Polini is and remains ideal for original and little worked on engines. Here he can score with his early and high torque. This makes it ideal for those who place a lot of emphasis on pulling power, longevity (through low revs) and low consumption.
221 Version
The 60mm version of the POLINI 221 Aluminium Touring Kit is designed for advanced mechanics who wish to replace their existing crankshaft with a longer stroke shaft, increasing displacement by 3mm. The bore size remains the same, but the longer stroke allows for improved performance due to longer intake timing angles. This results in an engine with a confident and wide torque band, offering approximately 17-20 HP (depending on the exhaust). With a longer primary reduction paired with this kit, it is possible to easily maintain a cruising speed of around 120km/h. Changing to straight cut gears my allow more power within the gearing available.
Exhaust Recommendations: Polini have designed several exhausts over the last couple of years, but the standard road version works perfectly with the 210 or 221 kit (.
- Bore: Ø68,5mm
- Cylinder material: Aluminum with carbide coating
- Piston: Meteor with large ports and ribbing in the piston crown
- Exhaust flange: Bolted, with fiber gasket
- Cylinder head: Central with cooling fins also on the bottom and cantering pins
- Head gasket: Copper (0.75mm)
- Base gasket: Aluminum (0.25mm)
Comes in:
- Aluminium with screwable flange for 57mm stroke
- Aluminium with screwable flange for 60mm stroke
The POLINI 210 Aluminium Touring Kit pairs perfectly with the Polini crankshaft, providing exceptional tuning and touring capabilities.
Comparison No. 140.0231 (POLINI)
