O.S. MAX .55AX Nitro RC Airplane Engine
The O.S. MAX .55AX is a legendary 9.02 cc ABC glow (nitro) engine designed for .40 to .55 size RC airplanes. Known for its smooth throttle response, excellent reliability and impressive power, it is ideal for sport, trainer and aerobatic aircraft.
For a limited time, every engine includes 1 litre of Falcon Premium Nitro Fuel at no additional cost, so you can fuel up and get flying sooner. This value-added package is perfect for both new and experienced RC pilots.
With a larger 9.02 cc displacement, the O.S. MAX .55AX delivers noticeably more power than traditional .46-class engines while fitting most airframes designed for .40–.55 size models. It shares the same mounting bolt pattern as the O.S. MAX .46AX, making it an easy upgrade without requiring major airframe modifications.
Whether you're replacing an older glow engine or building a new model, the O.S. MAX .55AX provides dependable performance and the quality that O.S. Engines are known for worldwide.
Key Features
- Genuine O.S. MAX .55AX glow engine
- Powerful 9.02 cc ABC two-stroke nitro engine
- Fits most .40–.55 size RC airplanes
- Direct replacement for many .46-class glow engines
- Same mounting bolt pattern as the O.S. MAX .46AX
- Smooth, reliable throttle response
- Excellent power-to-weight ratio
- Large cooling head for improved heat dissipation
- Angled high-speed needle valve for easy tuning
- Durable precision-machined construction
- Ideal for sport flying, aerobatics and trainers
Why Choose the O.S. MAX .55AX?
The .55AX offers the perfect balance of power, reliability and ease of operation. Its increased displacement allows it to swing larger propellers, producing stronger acceleration, improved vertical performance and better overall flight characteristics compared to many standard .46-size engines.
Pilots upgrading from smaller glow engines will appreciate the extra torque while still enjoying easy installation thanks to its compatible mounting dimensions.
Applications
The O.S. MAX .55AX is suitable for:
- Sport RC airplanes
- Aerobatic aircraft
- Trainer models
- Low-wing sport aircraft
- High-wing trainer aircraft
- Scale RC airplanes
Technical Specifications
| Specification | Details |
|---|---|
| Engine Type | Two-Stroke ABC Glow Engine |
| Displacement | 9.02 cc (.55 cu.in.) |
| Suitable Aircraft | .40–.55 Size RC Airplanes |
| Fuel Type | Glow (Nitro) Fuel |
| Cooling | Air Cooled |
| Carburetor | Twin-Needle Carburetor |
| Starting | Electric Starter or Hand Start |
What's Included
- ✅ Genuine O.S. MAX .55AX Glow Engine
- ✅ FREE 1 Litre Falcon Premium Nitro Fuel
- Instruction Manual
- Standard Accessories Supplied by O.S. Engines
"Looking for a lighter option? The O.S. MAX .46AX is ideal for .40–.46 size models."