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The engine upgrade kit will almost
double your horsepower taking the engine from 49cc's to 80cc's. The effect will
be additional 5-15 mph and more power. The kit includes everything needed
including a new cylinder head, wider piston, rings, fuel and exhaust valves and
valve springs and the necessary gaskets to do this upgrade using your existing
head assembly. Installation of the kit does require some special tools and small
motor experience, we strongly recommend someone who has small engine experience
do the work. This kit is made for the 139QMB
engines (and clones) and will fit the Avispa, Sports Edition, Cruising
Edition, Scorpione, Retro Sport 50, (and clones). The QMB139 49/50cc
engine is used on virtually all 49cc, 4-stroke imported scooters regardless of
the Brand/model, body type, name or manufacturer. Baja SC50, Strada RX 50, Jalon
JL50QT-21, Falcon and JL50QT-15, JL50QT-16,Strada RX 50, Jalon JL50QT-21 ,
JL50QT-15, JL50QT-16, JL50QT-18, Pantera Freedom, Fusion and Retro, Verucci
4s,10A,10D,RetroSport, Avispa, Sports Edition, Sunl SL50QT-16, SL50QT-16,
SL50QT-18, SL50QT-2, SL50QT-3, Roketa Bahama, Maui, Sicily, Tank, Baotian
50QT-9, Baotian, 50QT-11, Dotera 50QT-11, Jalon JL50QT-18, Sinski XSJ50QT-6,
Sinski XSJ50QT-B, Taishan Commuter, Taishan Sport Zhong Hu 50cc 4t, most Jonway,
Tank, Lance Powersports and many more.....
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