English :

MADE IN JAPAN. ALIGN Hyper engine for superior 91 size helicopter.
Delivers more horsepower for higher rotor speeds.
New design for crankcase, provides good support to the crankshaft and ball bearing.
Besides good looks and excellent cooling, this engine is machined blue alumite heat sink head also boosts combustion efficiency for more power stability.

Displacement::15cc(0.91 cu in)
Bore:25.8mm(1.02 in)
Stroke:22.0mm(0.87 in)
Practical rpm range:2000-16000 rpm
Output:3.3hp/15000rpm
Weight:605g(21.3 oz)