O.S. Model no. 19210

Specifications:
Displacement: 1.20 cu in \(20 cc\)
Bore: 1.197 in \(30.4 mm\)
Stroke: 1.083 in \(27.5 mm\)
Practical rpm range: 1800-9500
Power Output: 3.1 hp @ 9000 rpm
Weight With Muffler: 29.0 oz \(823g\)
Weight Without Muffler: 22.8 oz \(647g\)

Features
Suitable for 3D, precision and sport flying
25% more displacement than a .91, but bolts into the same space with almost no extra weight
Power Box muffler included
Angled heat sink adds more surface area

Perfect for 3D, precision and sport flying!
It`s a fantastic way to ratchet up horsepower for more flying fun! The 120AX, which boasts 20% more displacement than a .91, can turn bigger props with ease, resulting in improved 3D, precision and sport flying. Boost your plane`s performance, without compromising weight bolt in a 120AX and see the difference for yourself!
With the 120AX, there`s no need to buy an expensive aftermarket muffler! The included Power Box muffler comes with two adapters one of which turns the muffler 90deg to become a "Pitts style."