Airsal
Airsal 50mm Big Bore Cylinder Kit for QMB139 50cc
SKU 158-3
$138.00
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Shipping calculated at checkout.
Description
Airsal 50mm Big Bore Cylinder Kit for Kymco Agility 50 and QMB139 50cc Engines. Kit includes cylinder, piston, rings, piston pin, cir clips, and gaskets. Aluminum cylinder construction for better heat dissipation.
When used in conjunction with a stock crankshaft the total displacement comes out to 81.3cc! Your stock head can be reused. High compression piston included! .5mm taller than most standard 50mm big bore kits.
*You may need to modify your engine case to accommodate the larger cylinder. Not compatible with Sym Symply 2. On some Chinese QMB139 engines, the cam holes may need to be enlarged.
When used in conjunction with a stock crankshaft the total displacement comes out to 81.3cc! Your stock head can be reused. High compression piston included! .5mm taller than most standard 50mm big bore kits.
*You may need to modify your engine case to accommodate the larger cylinder. Not compatible with Sym Symply 2. On some Chinese QMB139 engines, the cam holes may need to be enlarged.
- Upgrades to 81.3cc
- Cylinder Bore: 50mm
- Cylinder Sleeve Outer Diameter: 54mm
- Compression Height of Piston: 20mm
- Cam Hole Diameter: 6.5mm
Product Diagrams
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
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