GY6 Cylinders & Cases

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NCY Cylinder Kit
Big Bore 178cc (62mm) Or 63mm (180cc)
$185.00

This cast aluminum high compression cylinder kit comes complete with cylinder, gaskets, piston, rings, clips and pin. Add the ultimate power to your GY6 with this performance kit. We suggest that installation is performed by an experienced technician. Upgrading to the 62mm kit will give you more power through the low, to mid range and top end performance. We recommend installing the performance high lift camshaft with this kit.
The case will have to be bored out to accept this kit.

63mm (180cc) Also available, piston is not
ceramic coated. (62mm pictured)


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NCY Cylinder Kit
Big Bore 171cc (61mm)
$155.00

The only big bore 61mm kit on the market where you
do not have to bore out the cases, yes that is right,
simply bolt on the kit. We do recommend you also
use the NCY big bore head with this kit.

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NCY Cylinder Kit
Big Bore 80cc (50mm)
$125.00
This cast aluminum high compression cylinder kit comes complete with cylinder, gaskets, piston, rings, clips and pin. Add the ultimate power to your GY6 with this performance kit. We suggest that installation is performed by an experienced technician.

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NCY Cylinder & Head Kit 
Big Bore 85cc (52mm)
$265.00
This kit includes our NCY 52mm cylinder kit as well 
as the NCY 50mm cylinder head. 
We suggest that installation is performed by an experienced technician.

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GY6 Cylinder OEM
150cc (57.4mm)
$35.00
Very nice quality cast aluminum cylinder for 
stock GY6 150cc engine.

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GY6 Cylinder
50cc
$32.00
Stock cylinder for GY6 50cc engine.

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