Parts/Engines & fuel/Nitro & glow engines/O.S. 120AX 1.20 Glow Engine
O.S. 120AX 1.20 Glow Engine
O.S.

O.S. 120AX 1.20 Glow Engine

Part # OSM19218
Where to buy
$264.99
AMain Hobbies
Seen Oct 12, 2026
$264.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is the OS Engines 120FX 1.20 ring glow engine, with 70D carburetor.  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 displacement. That means it can turn bigger props with ease, resulting in improved 3D, precision and sport flying. Boost your plane's performance, without compromising weight or mounting space, bolt in a 120AX and see the difference for yourself!

Features:
  • Delivers 20% more power than a .91, and with new CCD technology will bolt right where the .91 used to be.
  • At 21 ounces, the 120AX is a very minimal weight increase over a .91.
  • The new angular head design not only looks great, it significantly increases surface area for better heat transfer.

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)
Recommended Props: 14x10 APC, 15x6 APC
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

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