Scooter GY6 QMB139 50cc High Quality Naraku 52.4mm Big Bore and 44mm Stroker

Description: Naraku 50cc QMB139 4-stroke 52.4mm, Racing Big Bore Cylinder and Head Kit. Kit includes cylinder, piston, rings, piston pin, cir clips, cylinder head, head gasket, and base gasket. When used in conjunction with a stock stroke of 41.4mm the total displacement comes out to 89.3cc! When used with a 44mm stroker crank, total displacement measures 94.9cc which we have available too Upgrades to 89.3ccCylinder Bore: 52.4mmCylinder Sleeve Outer Diameter: 54.4mm Wrist Pin Diameter: 13mmTotal Piston Height: 36.3mmCompression Height (from center of wrist pin hole to top edge of piston): 20mmNon-emissions style headIntake valve: 23mmExhaust valve: 20mmIntake Port Diameter: 20.8mmExhaust Port Diameter: 18.7mmSSP-G 44mm Stroke Crankshaft for QMB139 50cc engine specs: Overall Length: 247mmThread Size (tapered side): M10x1.25Thread Size (spline side): M12x1.25Bearing Outer Diameter (tapered side): 42mmBearing Outer Diameter (spline side): 47mmNumber of Splines: 26Connecting Rod Inner Diameter: 13mmNumber of Teeth (oil pump drive gear): 16 NGK Spark Plug

Price: 499.99 USD

Location: Port Orange, Florida

End Time: 2023-09-23T19:11:56.000Z

Shipping Cost: N/A USD

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Item Specifics

Restocking Fee: No

Return shipping will be paid by: Buyer

Returns Accepted: Returns Accepted

Item must be returned within: 14 Days

Refund will be given as: Money Back

Manufacturer Part Number: n/a

Brand: naruku