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YAMAHA YZ450F 2026 2026 - Akrapovic Exhausts - S-Y4MET17-FDHLTA
£1,638.00
Model Compatibility
- Yamaha YZ450F (2026)
- Yamaha YZ450F 70th Anniversary Edition (2026)
Note on Mid-Generation Changes: Akrapovič engineered the S-Y4MET17-FDHLTA specifically for the updated 2026 chassis constraints and power valve mapping curves. If you own a 2023–2025 variant of the YZ450F or the cross-country YZ450FX, you should source its direct predecessor, part number S-Y4MET16-FDHLTA.
Key Performance Specifications
- Road Legality: Strictly not street legal. It is designed explicitly for closed-course competition track use and completely lacks highway emissions or street-homologation approval markings.
- Materials: Constructed entirely from high-grade, lightweight titanium alloys across the headers, link sections, muffler body, and end cap. It features an upgraded surface coating on the outer sleeve for enhanced scratch resistance and easier pressure-washing.
- Weight Reduction: Shaves 19.7% (0.8 kg) off the factory exhaust assembly weight, reducing upper-chassis mass for sharper cornering transition physics.
- Performance Maximisation: Unleashes an additional 2.4 hp (1.8 kW) at 10,600 rpm with cleaner, more instantaneous low-to-mid power snapping.
- Noise Regulation Level: Designed with a tailor-made internal profile and an integrated header resonance chamber to directly meet strict FIM trackside competition noise limits.
- Tuning Requirements: True plug-and-play track setup. It functions natively alongside stock fuel configurations with no ECU remapping required out of the box.