Description

RUDDOG Racing RNX.4 3.5ccm Nitro Offroad Competition Engine (16% Nitro Version)

Item No: RP-0822
GTIN: 4052133035103

The RUDDOG RNX.4 represents the next generation of high-performance nitro off-road racing engines, building on the proven platform of the RNX22.3. Developed in close cooperation with top drivers, this engine was track-tested at the 2024 IFMAR World Championship by Marcus Kaerup, securing an A-Main finish.

This 16% Nitro version brings notable improvements in runtime, throttle response, and durability, making it a top-tier choice for competitive 1/8 nitro off-road racing.

Key Features:

• New DLC-coated crankshaft for reduced friction and extended durability
• Optimized combustion chamber for 16% nitro fuel – increased power & reliability
• Revolution Design Ultra backplate – improved fuel flow and engine efficiency
• Revolution Design Ultra carburetor dust seal – better protection and sealing
• Smooth powerband for enhanced driveability and control
• Increased fuel efficiency for longer runs between pit stops
• Comes with a high-quality RUDDOG engine bag for safe transport

Specifications:

• Displacement: 3.5ccm
• Application: 1/8 nitro off-road competition
• Fuel: 16% Nitro

With the RNX.4, you're getting world-proven racing technology, refined for top-level performance. Whether you're chasing faster lap times or podium finishes, this engine delivers the power, consistency, and reliability to stay ahead of the pack.