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| SKU | FMF045668 |
| MPN | 045668 |
| GTIN | 045668 |
| Certifications | None |
| Material | Anodized Titanium |
| Color/Finish | Anodized Titanium with Resin Carbon Cap |
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020,2023-2024 | Beta | 350 Rr | |
| 2020,2023-2025 | Beta | 350 Rr Race Edition | |
| 2020,2023 | Beta | 350 Rr S | |
| 2025 | Beta | 350 Rr X Pro | |
| 2020,2023-2024 | Beta | 390 Rr | |
| 2020,2025 | Beta | 390 Rr Race Edition | |
| 2020,2022 | Beta | 390 Rr S | |
| 2020,2023-2024 | Beta | 430 Rr | |
| 2020,2022-2025 | Beta | 430 Rr Race Edition | |
| 2020,2022-2023 | Beta | 430 Rr S | |
| 2025 | Beta | 430 Rr X Pro | |
| 2020,2023-2024 | Beta | 480 Rr | |
| 2025 | Beta | 480 Rr X Pro |
Experience unmatched performance and durability with the FMF 4-Stroke Factory 4.1 RCT Muffler, designed specifically for Beta 350, 390, 430, and 480RR models from 2020 to 2024. This anodized titanium muffler features FMF's renowned RCT (Reflector Core Technology) that optimizes exhaust flow for increased power and torque throughout the rev range. The sleek and lightweight design is complemented by a resin carbon cap, adding a premium look that stands up to the demands of off-road racing.
Engineered to enhance throttle response and reduce backpressure, the Factory 4.1 RCT muffler ensures your bike performs at its peak during intense rides. Its high-quality materials deliver exceptional heat resistance and longevity, making it an excellent upgrade for serious riders seeking both power and reliability. This muffler is a direct replacement component that fits seamlessly for easy installation, helping you get back on the trail faster.
Whether you're tackling rocky terrain or pushing your Beta machine to the limit on motocross tracks, the FMF Factory 4.1 RCT offers a perfect blend of performance, weight savings, and durability. Trust FMF Racing's engineering expertise to maximize your bike's potential with this top-tier exhaust solution.
Engineered to enhance throttle response and reduce backpressure, the Factory 4.1 RCT muffler ensures your bike performs at its peak during intense rides. Its high-quality materials deliver exceptional heat resistance and longevity, making it an excellent upgrade for serious riders seeking both power and reliability. This muffler is a direct replacement component that fits seamlessly for easy installation, helping you get back on the trail faster.
Whether you're tackling rocky terrain or pushing your Beta machine to the limit on motocross tracks, the FMF Factory 4.1 RCT offers a perfect blend of performance, weight savings, and durability. Trust FMF Racing's engineering expertise to maximize your bike's potential with this top-tier exhaust solution.
Customer reviews
Based on 160 reviews
Netherlands owned and operated
We want to deliver parts fast, efficiently, and with ease. Our mission is to continue to provide just that. To provide large inventory and efficient logistics while maintaining great service. As well as a community with like-minded auto enthusiasts that share the same passion as we do.

















