RUDDOG Racing RNX.4 3.5ccm Nitro Offroad Competition Engine (25% Nitro Version)
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Description
Overview
The RUDDOG Racing RNX.4 is a powerful nitro off-road engine developed for serious racers. Based on the successful RNX22.3, it offers longer runtime, smoother handling, and greater durability. Key features include the new DLC-coated crankshaft for increased strength and improved fuel flow, a redesigned cylinder head optimized for 25–30% nitro fuel, and Revolution Design upgrades such as the Ultra Backplate and Ultra Carburetor Dust Cover Seal for improved efficiency and protection. Designed for top performance, the RNX.4 delivers powerful performance and excellent fuel efficiency, and comes with a high-quality RUDDOG engine bag.
Features
- Based on the proven RNX22.3 engine platform
- Prototype tested at the 2024 World Championship by Marcus Kaerup
- Newly designed DLC-coated crankshaft for reduced friction and improved durability
- Optimized inner cylinder head for 25–30% nitro fuel for maximum performance and reliability
- Revolution Design Ultra Backplate for improved fuel consumption and longer runtime
- Revolution Design Ultra Carburetor Dust Cover Seal for better carburetor protection and durability
- Optimized power curve for improved driving comfort and control
- Improved fuel consumption for longer intervals between refueling
- Includes RUDDOG engine bag for safe storage and transport
| Displacement | 3.5 cc |
| Application | 1/8 Nitro Off-Road Racing |
| Fuel Version | 25–30% Nitro |