Cylinder -PARMAKIT 121cc W-Force- Vespa PV125, ET3 125, PK125

121cc Parmakit racing cylinder with reed valve intake for PV125, ET3, PK125, ETS

Driving license A1/B196 (11kW/15hp)
The 121cc Parmakit cylinder is the downsized version of the brutally powerful 135/144cc W-force cylinders. The intake control is completely independent of the otherwise dominant engine case intake thanks to the direct diaphragm intake cast onto the cylinder. The cylinder has very large scavenging surfaces and control angles designed for very sporty applications. In full racing trim, such a cylinder easily produces over 20 hp at the wheel, with an engine speed range that starts at around 6000 rpm.

If you want to explore the 11 kW/15 hp permitted by law in order to keep the engine compliant with the current A1 or B196 driving license regulations, this is also the right place for you. The cylinder can be trimmed to a lower rev level with a somewhat tamer exhaust. As a result, the maximum permitted power is not exceeded and, as a rule, drivability is also improved thanks to the earlier application of torque. However, the cylinder cannot deny its basic design. Various modifications to the engine housing (cylinder base sealing surface) and possibly to the frame (opening for intake manifold) must therefore be expected.

• Stroke: 51 mm
• Bore: Ø55mm
• Double cylinder head screw connection
• Centered combustion chamber dome