Cylinder Kit V.2 90cc incl. cylinder head for GY6, Kymco 50 2V
Vanlig pris
630,00 kr
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- With the latest V.2 Cylinder kit series from NARAKU, we can offer a more advanced product
- The bore has been taken out to 52.4mm
- The external diameter of the cylinder base has not been affected by the increase in displacement
- This means alterations to the crank cases are generally not required
- 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
- 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 apart
- 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, but we recommend changing the main jet
- For Sym scooters this kit is only suitable for the GY6 139QMB engine version and not the XS1P139QMB, AV05W or AW05W engine or the Sym Symply 2 models