With the latest V.2 Cylinder kit series from NARAKU, we can offer a far more advanced product than ever before. The bore has been taken out to 52.4mm providing superb power and a massive increase in bhp and torque really transforming the 50cc engines to something else..
The external diameter of the cylinder base has not been affected by the increase in displacement.
As a 4 stroke cylinder is effectively just a hole, the emphasis on technological development was placed on the piston and compression.

The piston has 2 additional CNC-machined oil grooves in the piston skirt, which collects engine oil to lubricate the cylinder bore and improve characteristics in extreme circumstances. The molybdenum coating aids the crucial running-in period and 2 oil recesses and a groove at each bearing point ensure the gudgeon pin is adequately lubricated. The compression ratio and power delivery set this cylinder streets ahead of other kits.
The kit contains a cylinder head with larger valves and optimised inlet and outlet ports, for technical reasons, a bore size of 50mm or larger requires a larger head for on-going use.

This kit is currently one of the biggest conversions on the market.
The kit can use the original carburettor with up jetting but we would seriously recommend a larger carburettor.