The DLE 55 Petrol Engine is one of the most trusted and widely used 55cc-class engines in giant-scale RC aviation. Delivering 5.5 horsepower at 7,500 RPM, it provides significantly more thrust than the original DLE-50, giving you the power, throttle response, and reliability needed for precision aerobatics, 3D flying, and large-scale sport aircraft.

Designed with bottom-induction reed-valve intake, advanced CNC machining, and tight tolerances, the DLE-55 runs smoothly, starts easily, and offers superb fuel efficiency. Its lightweight construction and high power-to-weight ratio make it the preferred choice for pilots who want dependable performance without unnecessary weight.

Complete with electronic ignition, Pitts-style muffler, spark plug, standoffs, and mounting hardware, the DLE-55 arrives ready to integrate into your project with minimal setup time.

Key Features

• Powerful 5.5 hp @ 7,500 RPM output

• Produces 2.2–4.4 lb more thrust than the DLE-50

• Smooth-running 4-petal V-type reed-valve induction

• Lightweight design with strong torque characteristics

• CNC-machined components for durability and precision

• Excellent throttle response at any attitude

• Includes muffler, spark plug, ignition system, and hardware

Perfect For

• Giant-scale aerobatic aircraft

• 50–60cc 3D and IMAC models

• Large warbirds

• High-performance sport aircraft

• Pilots upgrading from the DLE-50 or glow engines

Product Summary

A 55cc petrol powerhouse offering 5.5 hp, responsive throttle, and proven giant-scale reliability. A complete engine package ready for sport, scale, and aerobatic RC aircraft.

Specifications

• Stock Number: DLEG0055

• Displacement: 55.6 cc (3.392 cu in)

• Bore: 1.77 in (45 mm)

• Stroke: 1.38 in (35 mm)

• RPM Range: 1,350–8,500

• Output: 5.5 hp @ 7,500 RPM

• Weight: 3.5 lb (1.59 kg)

Suggested Propellers:
22x8, 22x10, 23x8, 23x10

Includes:
Electronic ignition, muffler, spark plug, gasket set, bolts, aluminium standoffs, throttle arm extension, mounting template.

Technical Data

• Induction: 4-petal V-type reed-valve, bottom induction

• Ignition Battery: 4.8–6.0V NiCd/NiMH, 6.6V LiFe, or 7.4V LiPo (regulator required for LiPo/LiFe)

• Compression Ratio: 7.6:1

• Fuel Mix: 30:1 petrol/oil

• Replacement Spark Plug: NGK CM6 (DLEG5510)

Weight Breakdown:

• Engine: 1,350 g (47.6 oz)

• Muffler: 100 g (3.5 oz)

• Ignition: 120 g (4.2 oz)

Why Buy From ProBuild Aircraft Ltd

• ✅ Official UK DLE Stockist – 100% Genuine Engines

• ✅ Trusted by Top International RC Pilots Worldwide

• ✅ Fast, Reliable UK Shipping

• ✅ Expert Technical Support & Industry Knowledge

• ✅ Trusted by RC Pilots Since 1993