IMPORTANT NOTICE:-
dear friends and customers, some of our competitors are using our photos of the yuandong engine factory(SKYHAWK FACTORY) on there web site to fool there customers and encourage them to buy their product and their product are not made by the skyhawk factory, in another word its a fault advertisement, MBBIMPORTS has been authorised by yuandong engine factory and grubeeinc to take a serious legal action against any company or person uses our images to well represent there product by our photos.
OUR SKYHAWK ENGINE FACTORY PHOTOS:-
ASSEMBLY LINE MACHINE SHOP IMPROVED CARBY TESTING
COLD RUN TESTING GT5 80CC READY MADE CRANCK MACHINING
FURTHER FACTORY TESTING PRECISION MEASURING EQUIPMENT MORE QUALITY CONTROLE
PRECISION TESTING MORE PRECISE TESTING
MORE VIDEOES OF OUR SKYHAWK FACTORY ON YOU TUBE:-
Beware of copycat engines from the no Name factory in China.
GT2B (GEN 4) 48CC Key feature:-
***** EXTRA HEAVY DUTY NEADLE BEARING ON PISTON PIN FOR LESS FRICTION AND LONGER LASTING.(STRONGER THAN GEN 2 GT 5)

Other cheap 2 stroke engines don’t have needle bearing, so it will not last you more than 2 month if you are lucky, and please note, when they break they cause more damage to your piston and rings and even cylinder body,and its not just that you need to replace it.
*****202 heavy duty Japanese crank bearing wich is longer lasting.

Other cheap 2 stroke engines has Chinese bearing, that will cause early engine breakdown because they are not heavy duty like the japanese ones.
GT2B GEN 4 48cc Specification:-
1. Engine Type: Single cylinder, air-cooled, 2 stroke
2. Type of fuel mix :( 15:1/20:1-25:1)
3. Displacement: 48cc
4. Ignition: C.D.I. ignition
5. Max.Power: 1.3kW @ 5500rpm
6. Economy: 100 km/1.2 litre fuel
7. Max speed: 50km/h
8. Weight: 6kg
9. Bore: 40mm
10. Stroke: 38mm
11. Compression ratio: 6.4:1
This product comes with all what you need to turn your ordinary V frame or Hard tail bicycle into a motorbike.