AKRAPOVIC Evolution Line Exhaust System - Titanium - CRF450R/CRF450RX S-H4E1-FDHLT

If you're running a CRF450R or CRF450RX on the circuit, exhaust flow directly impacts throttle response, power delivery, and race-day consistency. The AKRAPOVIC Evolution Line titanium system cuts through the compromises of stock engineering—delivering measurable power gains, reduced weight, and the durability required for extreme off-road conditions without sacrificing FIM-compliant sound control.

Built from premium titanium alloys with variable wall thickness, this is a purpose-built competition exhaust that rewards precision tuning with responsive mid-range torque and sustained top-end power. Installation is straightforward bolt-on with no ECU remapping required, keeping you track-ready without hidden complexity.

• Material: Premium titanium alloy
• Weight reduction: 26.5% lighter
• Power gain: 2.5 HP @ 10,300 rpm
• Torque gain: 1.5 Nm @ 7,900 rpm
• Fitment: CRF450R / CRF450RX specific
• Muffler: Maximum volume optimized
• Header: Integrated resonance chamber
• Heat shield: Newly designed titanium
• Installation: Bolt-on, no remapping
• Sound: FIM competition compliant
• Application: Closed course racing only
• MPN: S-H4E1-FDHLT