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Naraku Item number: NK60002
Naraku

cylinder kit -NARAKU- 180cc 63mm for 4-stroke GY6, Kymco AC

130,00 €*
Ready for dispatch in 72h
Shipping weight 1,17 kg
Information on product safety
180cc Big Bore Kit for GY6 based engines from 125/150cc. The bore is 63mm, so the crankcase must be machined to accommodate the cylinder, here clean work as well as accuracy is required, as it goes very into the edge areas. No plug & play installation.

Kit fits many air cooled 4stroke Kymco engines 125-150cc (scooters), as well as most Chinese import vehicles 125/150 cc (scooters, quads & buggies). Can be used with original cylinder head.

To get the full power out of the cylinder, for GY6 engines (not Kymco) can be additionally installed a cylinder head with larger valves, which is also available. For all those for whom this is not enough, a sports camshaft with modified timing is still available.

Before ordering, please check if the dimensions of the cylinder base opening in your crankcase are sufficient. On some models, the opening must be machined to provide enough mounting space for this big bore cylinder. The outside diameter of the cylinder liner (it protrudes into the crankcase) is 65mm.AI-translation

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General
Performance class
Sport
EAN
4250362411006
 
Piston pin
Diameter
15 mm
 
Spark plugs
Thread type
M10x1,00
Thermal value NGK
C7HSA
Spark plug thread
kurz
 
Cylinder
Drill hole
63 mm
Type of cooling
luftgekühlt
Displacement
180 cm³
Motor type
4-Takt
Material
Aluminium
Piston raceway material
Grauguß
Cylinder gasket set included
ja
Cylinder head included
nein
 
Crankshafts
Stroke
57.8 mm
 
Piston
Number of piston rings
3
Piston manufacturing method
gegossen
 
Piston rings
Piston ring type
Rechteck-Ring
 
Piston clips
Piston clip type
G-Typ
Wire gauge Piston clip
1,0mm
 
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