Cylinder Polini Evolution 2 135cc, Vespa ET3/PV/PX, d=58mm, 51mm stroke

Polini is one of the big names in 50cc scooter tuning, and is also one of the leading manufacturers of tuning parts for Vespa, modern and vintage. Cylinders, intake manifolds, exhausts, air filters, carburetors, crankshafts and more - everything you need to boost the performance of your Vespa.

High-end tuning for your Vespa: Polini Evolution 2 135cc, Vespa ET3/PV/PX, d=58mm, 51mm stroke. This aluminium racing cylinder is built to race: lots of power, great torque, top acceleration and mind-blowing speeds, all of it while remaining dependable and durable. The cylinder fits all 125cc Smallframe Vespa models and can be used with original crankshaft; only V50 and similar models require the use of a 51mm crankshaft.

Displacement is 135cc, with 58mm bore. Port timing were calculated for race use, 6 transfer ports, a state-of-the-art Nikasil coating and the special shape of the cylinder head make for optimum performance and excellent discharge of exhaust fumes. The cylinder comes with a chrome-plated low-friction 2-ring piston.

Since this is a high-end racing cylinder, we recommend combining it with a larger carburetor (24mm, 26mm, 28mm or even bigger) to provide sufficient cooling. On top, a good tuning exhaust (for example P200.0400) will help to unlock the tremendous power potential of this engine.

• cylinder complete with piston, head and gaskets
• Nikasil-coated aluminium cylinder
• HC cylinder head
• 2-ring piston
• displacement: 135cc
• spark plug: Long thread (NGK BR10EG)