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Cylinder Kit V.2 90cc incl. cylinder head for GY6, Kymco 50 2V

NARAKU
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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
Brand
NARAKU
Vendor Part Number
NK100.52
Material
Aluminum
Product Name
Cylinder Kit
Units
Kit
Scooter&Moped
Page - 408

NARAKU

CYLINDER KIT 90CC

09310931 / NK100.52

259,98EUR*
*incl. 19% VAT
5 In Stock
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