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AlveyTech 72cc 47 mm High Performance Big Bore Cylinder Kit for 50cc QMB139 Scooter Engines
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*Price and Stocks may change without prior notice
*Packaging of actual item may differ from photo shown
- Electrical items MAY be 110 volts.
- 7 Day Return Policy
- All products are genuine and original
About AlveyTech 72cc 47 Mm High Performance Big Bore
Our 72cc scooter big bore cylinder kit is great for increasing overall performance on small under-powered 50cc QMB139 scooter engines. Engine kit increases engine bore size from 50cc to 72cc and includes everything shown in the image; cylinder, rings, and gaskets. This kit also comes with the cylinder head and is our most complete 50cc engine upgrade kit available. This 72cc scooter engine kit increases low end acceleration as well as top speed. This high performance scooter big bore engine kit is easy to install. Combine with a high performance carburetor and high performance exhaust and get peak performance from your 50cc gas scooter. Note: This high performance cylinder kit is only compatible with 4-stroke 50cc QMB139 engines.
