Skip to the content
Welcome to Flex Innovations!
GP123 V2 WITH MUFFLERS
$1,050.00
Backordered
SKU: FPMGP123
Finding an engine for your aircraft is easy, but getting an affordable engine with such high power is next to impossible! The specially designed crankcase makes sure fuel is equally distributed to both cylinders. It also optimizes power, reduces vibration, and increases durability. The GP123 is a great choice for the Mamba 120!
Includes:
- GP Mufflers
- 6.6V~8.4V Ignition
- Gaskets
Recommended Props:
2-Blades
- 27×11
- 27x12th
- 28×10
- 28×12
- 29×9
- 29×10
3-Blades
- 26×12
- 27x12th on Tuned Pipes
| Specifications: |
| Displacement: |
123 c.c. |
| Bore |
46.5mm |
| RPM Range |
1500 – 8900 |
| Output |
12 Horsepower |
| Total Weight |
2300 g (5.07 lb) |
| Ignition Weight |
202 g (0.45 lb) |
| Muffler Weight |
330 g (0.73 lb) |
| Gasoline |
89-92 Unleaded |
| Gas/Oil Mix Ratio |
40:1 |
| Carburetor |
Walbro WJ-71 |
| Spark Plug |
NKG CM-6 |
| 2D Drawing Link |
GP123-Engine-2D-Drawing |
| Exploded View Link |
GP123-Exploded-View |
🇺🇸🇺🇸Celebrate Independence with the Freedom Flight 250 Sale! 🇺🇸🇺🇸
🇺🇸🇺🇸The Freedom Flight 250 Sale is now live — don’t miss your chance to save on this all-American favorite. Shop the sale by clicking here!🇺🇸🇺🇸
🇺🇸🇺🇸Please note: Flex Innovations will be closed Friday, July 3, 2026, in observance of Independence Day and will reopen Monday, July 6, 2026.
Wishing you a safe and happy Fourth of July!🇺🇸🇺🇸
Dismiss