More muscle for .40 sized Profiles!!

Increase displacement in your 40-size model the easy way: just drop in a 55AX engine! You'll enjoy more horsepower for swinging bigger props — which means improved 3D, precision and sport flying. Best of all, there's no modifications required!  The new 55AX mounts directly in the place of the 46FX.  The 5-sided, angular head design looks great and significantly increases surface area for better cooling.  And the  diagonally-placed needle eliminates the need for a remote needle valve. 

O.S. 1.20 AX
IN STOCK

SPECIFICATIONS:
Displacement: 1.20 cu in (20 cc)
Bore: 1.197 in (30.4 mm)
Stroke: 1.083 in (27.5 mm)
Practical rpm: 1,800-9,500
Output: 3.1 hp @ 9,000 rpm
Weight: 21 oz (650 g)
Includes E-5020 Power Box™ muffler w/two adapters
Recommended Props: 14x10 APC, 15x6 APC

With the 120AX, there's no need to buy an expensive aftermarket muffler! The included Power Box comes with two adapters — one of which turns the muffler 90° to become a 'Pitts style.

It's the 'no mod' way to ratchet up horsepower for more flying fun! The 120AX fits in the same space as a .91 — while boasting 20% more power. That means it can turn bigger props with ease, resulting in improved 3D, precision and sport flying. At 21 ounces, the 120AX is a very minimal weight increase over a .91.  Boost your plane's performance, without compromising weight or mounting space — bolt in a 120AX and see the difference for yourself!

The new angular head design not only looks great, it significantly increases surface area for better heat transfer.