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A 4-Stroke header system that incorporates FMF's patented Power Bomb module at a precise location in the initial stage of the header system; by positioning the "Bomb" at this key point, the expansion and contraction of exhaust sonics through the system resulting in a flow increase of nearly 10%. The surface of the perforated core lets the sound exit into the absorbing material (steel wool packing) and then allows the air to expand, cool and ramp back up at higher air pressures (RPMs). The Power Bomb is a "pre-muffler" of sorts, which helps to lower the bike's sound output because it provides more sound-absorbing surface area to allow the exhaust gases to become absorbed.
FMF Racing Beta 350/390/430/480RR 20-25 Hex Q4 S/A Muffler
$499.95
Sale price
$499.95
Regular price
$499.99
Select your bike to check fitment.
Fits 19 bike models
- Beta 390 RR-Race Edition2020–2025
- Beta 390 RR-S2020–2023
- Beta 430 RR2020
- Beta 430 RR2023–2024
- Beta 430 RR X-Pro2025–2026
- Beta 430 RR-Race Edition2020–2025
- Beta 430 RR-S2020–2023
- Beta 480 RR2020
- Beta 350 RR2020
- Beta 350 RR2023–2024
- Beta 350 RR X-Pro2025–2026
- Beta 350 RR-Race Edition2020–2025
- Beta 350 RR-S2020–2023
- Beta 390 RR2020
- Beta 390 RR2023–2024
- Beta 390 RR X-Pro2025–2026
- Beta 480 RR2023–2024
- Beta 480 RR X-Pro2025–2026
- Beta 480 RR-Race Edition2020–2025
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020,2023-2024 | Beta | 350 RR | Base |
| 2025-2026 | Beta | 350 RR X-Pro | Base |
| 2020-2025 | Beta | 350 RR-Race Edition | Base |
| 2020-2023 | Beta | 350 RR-S | Base |
| 2020,2023-2024 | Beta | 390 RR | Base |
| 2025-2026 | Beta | 390 RR X-Pro | Base |
| 2020-2025 | Beta | 390 RR-Race Edition | Base |
| 2020-2023 | Beta | 390 RR-S | Base |
| 2020,2023-2024 | Beta | 430 RR | Base |
| 2025-2026 | Beta | 430 RR X-Pro | Base |
| 2020-2025 | Beta | 430 RR-Race Edition | Base |
| 2020-2023 | Beta | 430 RR-S | Base |
| 2020,2023-2024 | Beta | 480 RR | Base |
| 2025-2026 | Beta | 480 RR X-Pro | Base |
| 2020-2025 | Beta | 480 RR-Race Edition | Base |