• Engine Cases (Pair, Long, Big Bore, Custom); GY6
Scooterworks Exclusive Custom Big Bore Engine Cases for GY6 150 Long Engine. We machine these in matched pairs ourselves! They are bored to fit up to a 63mm Performance Cylinder Kit. Go big.

Cases are matched Right side and Left side, and stamped with a serial number to make sure you have a perfectly matched set.

Check out the following Cylinder Kits that will work with these cases on a GY6 150 Engine:

57.4mm Cast Iron
59mm Cast Iron
61mm Cast Iron
63mm Cast Iron
58.5mm Ceramic
61mm Ceramic
62mm Ceramic

Pick up a new crankcase gasket to go with your new, big bore cases.

Special Bore (Sold in Matched Pair)

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Engine Cases (Pair, Long, Big Bore, Custom); GY6

SKU: 1100-1418
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$149.99
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