The DLE-20RA is a compact, high-performance 20cc 2-stroke petrol engine designed for pilots who require maximum power in tight-cowl installations. Its rear-exhaust configuration allows for clean, streamlined mounting while improving tuned-pipe compatibility and airflow. Weighing just 870 g complete, the DLE-20RA delivers an impressive 2.5 hp at 9,000 RPM, giving your RC aircraft outstanding acceleration, crisp throttle response and a superb power-to-weight ratio.

Precision CNC-machined components, sealed crankshaft bearings, and a lightweight piston ensure long-term reliability and smooth operation with minimal vibration. The rear-mounted pumper carburettor provides consistent fuel delivery and easier tuning, while the updated muffler improves aeration and efficiency. With electronic ignition and a generous accessory kit included, the DLE-20RA is ready for fast, straightforward installation.

Whether upgrading from glow engines or looking for petrol efficiency with premium performance, the DLE-20RA is one of the best 20cc class engines available.

Key Features

• High power-to-weight ratio: 2.5 hp @ 9,000 RPM

• Rear-exhaust design ideal for tight cowls and tuned-pipe setups

• Lightweight piston for rapid acceleration and low vibration

• CNC-machined components for precision and durability

• Sealed crankshaft bearings for longer service life

• Updated muffler for improved aeration and efficiency

• Rear-mounted pumper carburettor for easy tuning and consistent power

• Excellent upgrade choice from glow to petrol engines

• Includes electronic ignition and comprehensive accessory pack

Perfect For

• Warbirds and scale aircraft with restricted cowl space

• Aerobatic and sport models in the 20cc class

• Tuned pipe and rear-exhaust installations

• Pilots upgrading from glow engines seeking better economy

• Builders requiring a compact, lightweight petrol powerhouse

Product Summary

A compact, powerful and efficient 20cc rear-exhaust petrol engine, offering excellent throttle response, low vibration and superb reliability. Complete with ignition, muffler and installation accessories for a fast, clean setup.

Specifications

• Stock Number: DLEG0420

• Displacement: 20.0 cc (1.22 cu in)

• Bore: 32 mm (1.26 in)

• Stroke: 25 mm (0.98 in)

• Total Weight: 870 g

  • Engine: 660 g

  • Muffler: 80 g

  • Ignition Module: 130 g

• RPM Range: 1,700–9,000

• Output: 2.5 hp @ 9,000 RPM

• Fuel: Unleaded petrol + 2-cycle oil (30:1 mix)

• Ignition Battery: 4.8–8.4 V NiCd/NiMH, 6.6 V LiFe, or 2S LiPo

• Replacement Spark Plug: NGK CM6 (DLEG5510) or equivalent

Static Thrust:

• 6.3 kg (13.88 lb) @ 100 m

• 5.6 kg (12.34 lb) @ 1,800 m

Suggested Propellers:

• 14×10

• 15×8

• 16×6

• 16×8

• 17×6

Included in the Box

• DLE-20RA Engine

• Electronic ignition module

• Updated muffler

• Spark plug

• Throttle arm extension

• 2 × exhaust extensions

• Gaskets, bolts & fittings

• Detailed instruction manual

Why Buy From ProBuild Aircraft Ltd

• ✅ Official UK DLE Stockist – 100% Genuine Engines

• ✅ Trusted by Top International RC Pilots

• ✅ Fast UK Shipping & Secure Packaging

• ✅ Expert Advice on Petrol Engine Installation & Setup

• ✅ Trusted by Pilots Since 1993