Full Exhaust System FMF Factory 4.1 RCT — Yamaha YZ 450 F 2020–2022, YZ 450 FX 2021–2023, aluminium muffler, stainless header
SKU: 044460
Replaces part numbers: 18201931
Price incl. VAT (23%)
Shipping from €3.90
to a pickup point
14-day returns
no questions
24-month warranty
on all parts
Description
The FMF Factory 4.1 RCT is FMF's flagship four-stroke muffler. RCT (Resonance Chamber Technology) is a patented core design that cuts noise while keeping power up. Internal chamber channels increase volume and flow for power across the rev range. Factory Forward Engineering moves mass closer to the centre. The rear end cap opens with four screws to swap the tuning insert or spark arrestor without removing the muffler. Includes MegaBomb header and spark arrestor screen. Does not meet the 2025 FIM sound limit. Fits: Yamaha YZ 450 F 2020–2022, YZ 450 FX 2021–2023. Part number: 044460. Delivery 5–8 working days.
Compatibility (1)
Specifications
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