Description
SKU: RCGFStinger40tCRCP
Brand: RCGF Stinger
Availability: Available to order
High-Performance 40cc Twin Cylinder RC Engine – Complete Kit
The RCGF Stinger 40 Twin is a premium twin-cylinder gas engine designed for serious RC airplane enthusiasts. This 40cc powerplant delivers exceptional performance with 4.6 horsepower output, making it ideal for medium to large-scale RC aircraft models.
What’s Included in Your RCGF Stinger 40 Twin Package
When you purchase the RCGF Stinger 40 Twin from Carbon RC Parts, you receive a complete, ready-to-install engine kit including:
- Twin-cylinder 40cc gas engine with premium construction
- Electronic ignition system for reliable starting
- Twin silencers/mufflers for reduced noise operation
- Spark plugs pre-installed and tested
- Exhaust extensions for flexible mounting options
- Engine standoffs for secure installation
- Complete hardware kit – all bolts, nuts, and gaskets included
No need to purchase additional components – this is a complete engine solution ready for installation in your RC airplane.
Why Choose the RCGF Stinger 40 Twin RC Engine?
RCGF Stinger engines have earned an outstanding reputation in the RC modeling community for their exceptional quality, reliability, and performance. Here’s why the Stinger 40 Twin stands out:
- Lightweight aluminum construction – Reduces overall aircraft weight while maintaining durability
- Powerful 4.6HP output – Provides excellent thrust-to-weight ratio for aerobatic performance
- Twin-cylinder design – Delivers smoother operation and consistent power delivery
- Quality manufacturing – Precision-engineered components ensure longevity and reliability
- Excellent fuel efficiency – 2-stroke piston valve design optimizes fuel consumption
- Easy maintenance – User-friendly design simplifies routine servicing
Technical Specifications – RCGF Stinger 40 Twin
| Engine Type: | 2-stroke piston valve gasoline engine for RC airplanes |
| Displacement: | 40cc (2.44 cubic inches) |
| Cylinder Configuration: | Twin cylinder |
| Bore x Stroke: | 32mm x 26mm (1.26″ x 1.02″) |
| Maximum Power Output: | 4.6 HP @ 8,600 RPM |
| Recommended Propellers: | 19×8, 19×10, 20×8, 20×10 |
| Power Supply Requirements: | 7.4V – 14V (2S – 3S LiPo compatible) |
| Weight: | Approximately 2 kg (including accessories) |
| Fuel Type: | Gasoline/Petrol with 2-stroke oil mixture |
Ideal Applications for the RCGF Stinger 40 Twin Engine
This versatile 40cc twin-cylinder engine is perfectly suited for:
- Sport aircraft – 60-80 inch wingspan models
- Scale warbirds – Realistic sound and performance
- 3D aerobatic planes – Excellent power-to-weight for unlimited vertical
- Vintage aircraft models – Authentic multi-cylinder performance
- Trainer aircraft – Reliable power for learning advanced maneuvers
Installation and Setup Guidance
The RCGF Stinger 40 Twin features a straightforward installation process. The engine mounts accommodate standard RC airplane mounting configurations, and the included standoffs allow for proper firewall spacing. We recommend:
- Using anti-vibration engine mounts to minimize airframe stress (available separately)
- Following the recommended propeller sizes for optimal performance
- Ensuring proper fuel mixture ratios as specified in the manual
- Breaking in the engine according to manufacturer guidelines
RCGF Stinger Quality You Can Trust
RCGF Stinger has established itself as a leading manufacturer of high-quality RC gas engines. Each Stinger 40 Twin undergoes rigorous quality control testing before leaving the factory, ensuring you receive an engine that performs to specification from the first start.
The precision manufacturing process includes CNC-machined components, balanced crankshafts, and carefully matched cylinder assemblies. This attention to detail results in an engine that runs smoothly, starts reliably, and delivers consistent performance flight after flight.
Purchase Your RCGF Stinger 40 Twin Today

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Frequently Asked Questions
What fuel mixture should I use with the RCGF Stinger 40 Twin?
Use high-quality gasoline mixed with 2-stroke oil at a 40:1 or 50:1 ratio, depending on the oil manufacturer’s recommendations. Always use fresh fuel for best performance.
Is the ignition system included?
Yes! The RCGF Stinger 40 Twin comes complete with an electronic ignition system, spark plugs, and all necessary wiring. No separate ignition purchase required.
Related Products You May Need
Maximize your RCGF Stinger 40 Twin’s performance with these recommended accessories:
- Aluminum spinner – Professional finishing for your propeller installation
- Fuel dots and fuel lines – Quality fuel system components
- Carbon fiber propellers – Lightweight, balanced props for maximum efficiency
- Fuel Tanks – coming soon!
Additional Product Information
| Weight: | 2 kg |
| Dimensions: | See technical drawing image |
| Category: | Petrol Engines, RCGF Stinger Engines |




