Naraku Cylinder 58.5mm 155cc Big Bore Kit w/Cast Piston Fit 54mm (GY6)

Description: Naraku Cylinder 58.5mm 155cc Big Bore Kit with Cast Piston Fit 54mm for GY6 125/150cc + engines. Big bore kit for GY6 125/150cc + engines. The bore is 58.5 mm. Kit is suitable for all air-cooled 4-stroke 125-150cc Kymco engines (scooters), and most Chinese imported vehicles 125/150cc (scooters, quads, and buggies). This cylinder can be used with the original cylinder head. And if that wasn’t enough, a modified camshaft with adjustable timing is also available. Supplied as shown. Attention: No Boring Required!

Specifications:

Includes the following Cylinder, Piston + Rings, Gaskets (chain tensioner gasket, Hi and Low compression base gaskets, steel head gasket), Wrist pin, and Circlips.

•    1x Cast-Alumin Piston: 58.5mm
•    5x Piston Rings: 58.5mm
•    1x Wrist Pin w/G-clips: 42x15x10mm
•    1x Cast-Iron Cylinder: 58.5mm 
•    Outer Sleeve Diameter: 60.4mm
•    Cylinder Height (w/o sleeve): 68.8mm
•    Overall Height (w/sleeve): 90mm 
•    Made in Taiwan
•    Fit Intake Studs: M6 / Nuts: M6 / Socket: 10mm
•    Fit Exhaust Studs: M8 / Nuts: M8 / Socket: 12mm
•    Fit Cylinder Studs: 187.5mm 195.5mm / Nuts: M8 / Washers: M8 / Side Bolts: M6 / Socket: 8mm-12mm
•    Fit 54mm Stud Spacing (A-Block)
•    Fit 54mm Rocker Arm 2V Assembly
•    Fit Crankshaft 57.8mm +3mm
•    Fit Dowel Pin Set (10x14mm)
•    Fit Cam Chain 45 (90) links
•    Fit Chain Guide (standard)
•    Fit 54mm Cylinder Head 58.5mm to 61mm 2V
•    Fit GY6 125/150cc+
•    Optional: cut plastic fan shroud for best fitment

Supported Models: GY6 Crankcase (Part# 1100-1418); GY6 152QMI 157QMJ Chinese Scooter, ATV, Genuine Buddy, Kymco, Ruckus, Vento

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Item Weight & Package Dimensions:
•    2.869 pounds | 5.745" (L) x 5.125" (W) x 4.948" (H)