Naraku 50cc QMB139 4-stroke 52.4mm. Racing Big Bore Cylinder and Head Kit.Kit includes cylinder, piston, rings, piston pin, cir clips. 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!
Cylinder Sleeve Outer Diameter: 54.4mm. Total Piston Height: 36.3mm.
(from center of wrist pin hole to top edge of piston): 20mm. Intake Port Diameter: 20.8mm.Exhaust Port Diameter: 18.7mm. Uses Short 64mm Valve Stems. TAOTAO, WOLF, ICE BEAR, JMSTAR. ROKETA, SUNL, TANK, PEACE, COUGAR, GATOR AND MANY OTHERS. THIS PART SHOULD BE INSTALLED BY A PROFESSIONAL MECHANIC. THANKS FOR YOUR INTEREST IN OUR PRODUCTS. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle & Scooter Parts & Accessories\Engines & Engine Parts\Cylinder Heads". The seller is "gy6store" and is located in this country: US.
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