The Akrapovic Evolution Line Titanium Exhaust System is engineered for Honda CRF450R and CRF450RX motocross motorcycles used in closed-course competition. Designed to fit the limited space available within the motorcycle, this high-performance exhaust system combines lightweight construction, durability, and efficient exhaust flow for demanding off-road racing conditions. The system is manufactured by Akrapovic from premium titanium alloys, with section-specific material thicknesses that help reduce overall weight while maintaining strength and protection.
The large-format muffler is optimized for the available space to provide improved sound attenuation and smoother exhaust-gas flow with minimal restriction. Its profiled surface supports compliance with FIM competition noise limits while adding strength and durability to the muffler. The system delivers a deep, full exhaust note that complements the pulse of the single-cylinder engine. A titanium header with an integrated resonance chamber is designed to optimize performance and sound, while the newly developed titanium heat shield helps protect surrounding components and the rider from excessive heat.
Dyno testing by Akrapovic recorded gains of up to 1.8 kW, or 2.5 horsepower, at 10,300 rpm and 1.5 Nm of torque at 7,900 rpm compared with the standard stock exhaust system. The Evolution Line system is designed to improve throttle response throughout the rev range and enhance rider control when opening the throttle. Installation is a simple plug-and-play process that requires no remapping. The exhaust includes Akrapovic logo imprinting designed for improved surface durability. Manufacturer and vendor part number S-H4E1-FDHLT. This product is intended for closed-course competition use only and is not designed or approved for street use.
Features:
- Titanium Construction: Premium titanium alloys provide a lightweight, strong, and durable exhaust system for demanding off-road competition.
- Honda