GT15 15cc Gas 2-Cycle Airplane Engine with Muffler
Next Shipment October 2025

GT15 15cc Gas 2-Cycle Airplane Engine with Muffler

Item No.
OS Engines - OSMG1515
5
$508.76
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Solid, gas-powered performance

The GT15 is the newest and smallest offering in the OS Engines gasoline engine line. It weighs only 904g and cranks out over 2 horsepower and 15,000 rpm! Plus, its compact enough to fit in most airplanes that require a 2-stroke 61-size or 4-stroke 91-size engine. The carburetor design is made specifically for this engine. Set also includes an ignition module.
O.S. Two Year Limited Warranty
  • Offers power equivalent to a .90 4-stroke or .60 2-stroke glow engine, with the superior fuel economy advantages of gasoline.
  • Features the same mounting pattern as the 65AX.
  • Includes the compact IG-06 ignition module.
  • Specially designed O.S. carb makes tuning a breeze and delivers excellent throttle response; it comes equipped with a regulator and pump.
  • A special roller bearing on the large end of the conrod allows for 50:1 fuel/oil mixture.
Carb
Pump
O.S. originally designed compact carburetor expressly for gasoline engine and pump are installed.
Ignition Module
A compact IG-0 Ignition Module is included with the motor for perfect starts every time.
Power Box Muffler
Standard size, lightweight, Powerbox™ muffler

Product Specs

Bore
1.091" (27.7mm)
Carb Type
Rotary
Crankshaft Threads
UNF5/16-24
Crankshaft Type
Threaded
Cylinders
Single
Displacement
0.912 cu in (14.95 cc)
Engine (Only) Weight
22.26 oz (631 g)
Ignition Weight
3.35 oz (95 g)
Muffler Type
2-piece aluminum
Muffler Weight
6.28 oz (178 g)
Oil Type & Content
2-cycle oil at 30:1 - 50:1 mix ratio
Plug Type
CM6
Power Type
Gas
Product Height
4.3" (109mm) from crankcase bottom to top of cylinder head
Product Length
4.2" (106.2mm) from pump to front bearing
Product Width
2.4" (61mm) at mounting tabs
Prop Range
13 x 8-11 - 15x8
RPM Range
2,000 - 15,000
Starter Type
Hand Held Starter
Stroke
0.976 (24.8mm)
Total Weight
32 oz (904 g)

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