RUDDOG RNX21.3 3.5ccm Nitro Offroad Competition Engine

The RNX21.3 is RUDDOG Distribution’s first high-performance nitro off-road engine. The high-quality 3.5cc competition engine features as specially developed crankcase for exceptional performance and great fuel economy with a rear ceramic main bearing and a DLC-coated and Tungsten-balanced crankshaft ensuring very high power output and reliable performance. The engine is of a 3+1 port long-stroke design for high yet controllable torque especially in the lower RPM ranges, making it ideal especially for smaller or technical tracks. Other features include a 22D carburetor for smooth throttle response and high fuel economy while an O-ring equipped combustion camber insert keeps dust away from the delicate parts of the engine. The engine is rounded out by a gold-colour cooling head whose standard height allows to run the engine leaner, extracting ever greater milleage from the engine.

Features:

• Standard height cooling head for exceptional heat dissipation
• Specially developed crankcase for high performance and improved milleage
• 3+1 port design for high torque in the low to mid RPM range
• Tungsten-balanced and DLC-coated crankshaft
• Ceramic main bearing
• 3-needle carburettor
• 6.0mm and 6.5mm venturi insert included
• Including engine storage bag

Specifications:

• Displacement: 3.49cc
• Bore: 16.27mm
• Stroke: 16.80mm
• Ports: 3+1
• Carburettor: Sliding
• Power output: 2.68PS @ 34,000RPM
• RPM range: 4,000 - 42,000RPM
• Weight: 352g