Stinger Pro 125cc Twin Gas Engine
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Stinger Pro 125cc Twin Gas Engine
The Stinger Pro 125cc Twin Gas Engine brings the sound and smooth operation of a horizontally opposed twin to a large-scale RC airplane. The Stinger Pro 125 is an air-cooled, two-stroke gasoline engine with a Walbro carburetor, electronic ignition, and two angled spark plugs. This is the standard engine package; an electric starter is not included.
🚀 Target Applications:
- Large-scale balsa and composite RC airplanes designed for 100cc to 120cc+ power plants
- Giant-scale aerobatic models, IMAC airplanes, and scale warbirds calling for a two-cylinder gas installation
Key Features
- Horizontally Opposed Twin: Two-cylinder layout delivers lower operational vibration profiles compared to single-cylinder engines of similar displacement.
- Walbro Carburetor Integration: Features a genuine Walbro carburetor to support consistent fuel-air metering and dependable throttle tracking.
- Stinger DC-CDI Ignition: Includes a dedicated electronic ignition module with an automatic advance curve to simplify starting and optimize power.
- Dual NGK CM6 Spark Plugs: Equipped with two angled NGK CM6 spark plugs for dependable combustion across the 1,500–9,000 rpm operating range.
- Pro Package Accessories: Pack comes supplied out of the box with an aluminum throttle arm extension, mufflers, gaskets, and mounting bolts.
📋 Technical Specifications
| Brand / Gator RC SKU: | Stinger / STNG-125-TWIN |
| Configuration: | Horizontally opposed, two-cylinder, two-stroke gasoline engine |
| Displacement / Bore: | 125 cc / 1.85 in. (47 mm) |
| Maximum Output: | 13 hp (Manufacturer specification) |
| Operating Speed Range: | 1,500–9,000 rpm |
| Recommended Two-Blade Props: | 27×8, 27×10, 27×11, 28×8, 28×10, or 28×12 |
| Carburetor / Ignition Module: | Walbro / Stinger DC-CDI with automatic advance |
| Ignition Battery Supply: | 7.4–14 V Input Range |
| Spark Plugs: | Two NGK CM6 Plugs |
| Cooling System: | Air Cooled |
| Engine Bare Weight: | 5.09 lb (2,310 g) |
| Muffler Weight (Combined): | 7.4 oz (210 g) Manufacturer-listed combined weight |
| Ignition Module Weight: | 5.1 oz (145 g) |
| Listed Component Total: | 5.87 lb (2,665 g) before installation hardware and fuel system |
📦 In the Box:
- 1 × Stinger Pro 125cc Twin Gas Engine
- 1 × Electronic DC-CDI Ignition Module
- 2 × Mufflers with Gaskets and Bolts
- 2 × Spark Plugs
- 1 × Throttle Arm Extension
- 1 × Product Manual
Note: A suitable propeller, ignition battery, gasoline, and two-stroke oil are required for operation and sold separately.
🛠 Replacement Parts & Accessories
- 🔧 Shop Stinger 125cc Replacement Parts: Browse official factory components, including the gasket set, reed valve assembly with insulator, prop hub accessories, and Pro muffler options.
- ⚡ Shop Stinger Spark Plugs: Maintain clean combustion loops by selecting the SCM-6 Iridium option verified for the 125cc Twin engine. (The alternative 1/4-32 option on that page is designed for other engines).
The Gator RC Advantage: We stock genuine Stinger products along with compatible wheels, high-strength aluminum axles, custom landing gear tracks, and installation accessories to help complete your project. Orders ship quickly from our domestic Illinois warehouse.
