Engine Type | 2-stroke, single-cylinder |
Displacement | 125 cc |
Bore x Stroke | 2.13" × 2.13" (54 mm × 54 mm) |
Max Power Output | 21.5 HP @ 8,800 RPM |
Max Static Thrust | 148 lbs with 51" propeller |
Fuel Consumption | ~0.77 gal/hr (2.9 L/hr) |
Cooling | Forced air cooling system |
Starter | Manual Flash Starter |
Gear Reduction | Oil bath helical gear, 3.43:1 ratio |
Clutch | Dry centrifugal, oil bath |
Carburetor Options | Walbro WG8 or Polini Ø24 Float Bowl |
Air Filter | Airbox included |
Ignition | Electronic, with battery charger option |
Output Power | 40W @ 5,500 RPM (for electronics) |
Fuel Type | Unleaded 95 octane (E5) or 100LL AVGAS with 2.5% synthetic oil |
Engine Weight | 30.4 lbs (13.8 kg) |
Propeller Rotation | Clockwise |
Made In | 100% Italy |
🧩 Performance Engineering
Cylinder & Piston
Lightweight aluminum cylinder with nickel-chrome coating
High-silicon gravity die-cast piston with dual chromed/nitride rings
Smooth, low-friction operation with extended wear resistance
Exhaust System
Handcrafted expansion exhaust with aluminum silencer
Compact, aerodynamic, and quiet for comfort and efficiency
Built for reduced drag and low noise profile
Cooling System
Forced air cooling ensures consistent cylinder temperatures
Designed for optimized combustion and better power stability
Starter System
Includes the Polini Flash Starter – fast, easy, and reliable starts every time
Power Optimization
Strong torque throughout the RPM range
Tuned for efficiency with low fuel consumption
⚡ Advanced Features
12V Output Ready – Pre-wired for use with cockpit instruments or flight lighting
Closed Fuel Circuit – Helps prevent leaks during transport
Low Torque Kickback – Counter-rotating mass design minimizes propeller overturning torque
Frame Compatibility – Uses Polini’s standard mounting system for easy engine swaps