Naraku Cylinders’ Combo 52.4mm 94.9cc 2V w/Cast Piston (139QMB)

Description: High-Quality Naraku Cast-Iron Cylinder 52.4mm 94.9cc with Forged Aluminum Piston offer better durability and reduced friction for 139QMB 49/50cc + engines. The cylinder bore is 52.4mm. Naraku Cylinders' Combo 52.4mm 94.9cc 2V w/Cast Piston including the following parts Naraku 52.4mm (94.9cc) cylinder kit with cast piston and Naraku oversize 2V head 23/20. Naraku Cylinders' Combo 52.4mm 94.9cc 2V is suitable for all air-cooled 4 strokes, 49-50cc Kymco engines (scooters), and most Chinese imported vehicles 49/50cc (scooters, quads, and buggies).

When used in conjunction with a stock stroke of 41.4mm the engine displacement comes out to 89.3cc! When used with a 44mm stroker crank, engine displacement = 94.9cc!

NOTE: Please, measure with a caliper QMB crankcase bore (opening) for 54.4mm cylinder outer diameter sleeve need minimum 54.5mm bore clearance or boring and machining are required.

Specifications:

100% Naraku Products – NO SUBSTITUTE.

Includes the following Cylinder, Base gasket, Piston, Rings, Piston pin, Circlips, Cylinder head, Head gasket, Exhaust gasket.

1.    Includes Naraku Cylinder 52.4mm 2V, Piston + Rings, Gaskets (chain tensioner gasket, base gasket, steelhead gasket), Wrist pin, and Circlips.
•    51.88mm Cast-Alumin Piston
•    52.4mm Piston Rings (installed)
•    41.3mm x 13mm Wrist Pin w/G-clips
•    52.4mm Cast-Iron Cylinder
•    54.4mm Outer Sleeve Diameter
•    53mm Cylinder Height (w/o sleeve)
•    70.3mm Overall Height (w/sleeve)
2.    Includes Naraku Cylinder Head 52.4mm 2V NON-EGR, Valves Assembly.
•    64mm 2-Valve: 23mm Intake / 20mm Exhaust
•    Factory Ported: 20.8mm Intake / 18.7mm Exhaust
•    Valve Length: 64mm / Shaft Diameter: 5mm
•    6mm Intake Threads
•    6mm Exhaust Threads
•    Made in Taiwan
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•    Fit 6mm Intake Studs
•    Fit 6mm Exhaust Studs
•    Fit 64mm Rocker Arm Assembly 2V
•    Fit 50mm Stud Spacing /Diagonal 70.5mm
•    Fit Crankshaft 41.4mm to 44mm
•    Fit Cylinder 50mm to 52mm
•    Fit Dowel Pin Set (8x14mm)
•    Fit QMB 49/50cc+

Supported Models: GY6 139QMB 49cc-50cc engines, Buddy50, Filly 50, Kymco, QLink, RoughHouse, SYM, TaoTao

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Item Weight & Product Dimensions:
•    1.425 Pounds | 4.463" (L) x 4.156" (W) x 2.767" (H)
•    2.194 Pounds | 5.322" (L) x 5.290" (W) x 2.610" (H)