Description
Pipe Combo Overview:
The 2188 EVO OXD .21 On Road Tuned Pipe Combo by Hipex is a performance-driven upgrade designed for .21 on-road nitro engines. As an evolution of the proven 2188 design, it delivers improved power across the RPM range while maintaining excellent efficiency. This combo includes the tuned pipe and R8 manifold, offering a complete solution for racers looking to enhance engine performance.
About the Pipe Combo
OXD-Treated Performance With R8 Manifold Efficiency
Featuring advanced OXD surface treatment, this pipe undergoes a material hardening process that increases durability while improving resonance for more efficient power delivery. The 3-chamber EFRA-homologated design enhances low-end throttle response and maintains strong top-end speed, providing a smooth and controllable power curve. Optimized for OS-based and Picco engines, this combo ensures excellent compatibility and tuning potential. Paired with the R8 manifold, it delivers reliable performance and easy maintenance thanks to its cleanable exterior finish.
Features:
- OXD treated surface for increased durability
- Improved resonance for optimized power output
- 3-chamber EFRA homologated design
- Enhanced low RPM throttle response
- Strong top-end speed performance
- Optimized for OS and Picco engines
- Evolution of the 2188 pipe design
- Easy-to-clean exterior finish
- Includes R8 manifold






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