Akrapovic Evolution Line Full Exhaust System for 2025-2026 Honda CRF450R / CRF450RX | Titanium, Closed Course | S-H4E1-FDHLT

The Akrapovič Evolution Line S-H4E1-FDHLT is a complete titanium exhaust system for the 2025-2026 Honda CRF450R and CRF450RX, replacing the entire stock header and silencer with Akrapovič's flagship motocross system.

Confirm your model year before ordering. Honda redesigned the CRF450R for 2025 and Akrapovič builds a separate system for the earlier generation. Specialist retailers list this part against 2025 and later; a small number list it against 2021-2024. Given that this is a $2,141 system, we would rather you send us your VIN and let us confirm than have you guess — a full system that does not fit is not a return anyone enjoys.

This is a full system, not a slip-on. Header and muffler are both replaced, which is where the Evolution Line's gains come from — on a 450 motocrosser the header does most of the work, and a slip-on alone leaves the majority of the available power unclaimed. Titanium throughout takes real weight off a bike the rider physically throws around, and the Evolution Line is the system Akrapovič develops through its professional motocross programme.

Closed-course competition use only. No catalytic converter, no street homologation, and not a spark-arrester system for USFS or BLM land.

• Complete Evolution Line system — titanium header and titanium muffler
• Replaces the entire stock exhaust rather than the silencer alone
• Substantial weight saving over the factory system
• Developed through Akrapovič's professional motocross racing programme
• Closed-course competition use only — not street legal
• Not a spark arrester; does not meet USFS or BLM requirements
• Made in Slovenia by Akrapovič

Fits the 2025-2026 Honda CRF450R and CRF450RX. Closed-course competition use only. Contact us with your VIN before ordering if your bike is a 2024 or earlier — Akrapovič builds a different system for that generation.