FMF Racing Beta 350/390/430/480RR 20-25 Hex Q4 S/A Muffler

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.

The FMF Racing Beta 350/390/430/480RR 20-25 Hex Q4 Sound-Absorbing Exhaust Header System is designed to enhance your powersports experience with improved exhaust flow and sound management. Featuring FMF's patented Power Bomb module strategically placed within the header, this system increases exhaust flow efficiency by nearly 10%, delivering better performance across a range of RPMs. The Power Bomb acts as a pre-muffler, expanding and absorbing sound waves to reduce noise output while optimizing exhaust gases for smoother operation. Its perforated core allows sound to escape into steel wool packing, which further absorbs noise and helps cool exhaust gases, promoting more efficient airflow and enhancing engine responsiveness. Constructed with high-quality materials, this header system is built to withstand the rigors of off-road riding, ensuring durability and long-lasting performance. It also complies with EPA standards, making it a reliable choice for environmentally conscious riders. Installation is straightforward, fitting select 2020 and 2021 Beta models including the RR and RR-S editions, providing an excellent upgrade for riders seeking increased power and quieter operation without sacrificing reliability. Whether you're looking to improve your bike’s performance or reduce engine noise, this FMF Racing header system offers a balanced solution that meets the demands of serious off-road enthusiasts.

Features:

• Patented Power Bomb module positioned in the initial header stage for optimized exhaust flow

• Increases exhaust flow efficiency by nearly 10% for improved engine performance

• Perforated core design allows sound to escape into absorbing material, reducing noise output

• Steel wool packing helps absorb sound and cool exhaust gases for better airflow

• Constructed from durable materials suitable for off-road conditions

• Compliant with EPA standards for environmentally conscious riding

• Designed to fit specific 2020 and 2021 Beta models including RR and RR-S editions

Fitment:
Beta 350 RR Base 2020
Beta 350 RR Base 2023
Beta 350 RR Base 2024
Beta 350 RR X-Pro Base 2025
Beta 350 RR-Race Edition Base 2020
Beta 350 RR-Race Edition Base 2021
Beta 350 RR-Race Edition Base 2022
Beta 350 RR-Race Edition Base 2023
Beta 350 RR-Race Edition Base 2024
Beta 350 RR-Race Edition Base 2025
Beta 350 RR-S Base 2020
Beta 350 RR-S Base 2021
Beta 350 RR-S Base 2022
Beta 350 RR-S Base 2023
Beta 390 RR Base 2020
Beta 390 RR Base 2023
Beta 390 RR Base 2024
Beta 390 RR X-Pro Base 2025
Beta 390 RR-Race Edition Base 2020
Beta 390 RR-Race Edition Base 2021
Beta 390 RR-Race Edition Base 2022
Beta 390 RR-Race Edition Base 2023
Beta 390 RR-Race Edition Base 2024
Beta 390 RR-Race Edition Base 2025
Beta 390 RR-S Base 2020
Beta 390 RR-S Base 2021
Beta 390 RR-S Base 2022
Beta 390 RR-S Base 2023
Beta 430 RR Base 2020
Beta 430 RR Base 2023
Beta 430 RR Base 2024
Beta 430 RR X-Pro Base 2025
Beta 430 RR-Race Edition Base 2020
Beta 430 RR-Race Edition Base 2021
Beta 430 RR-Race Edition Base 2022
Beta 430 RR-Race Edition Base 2023
Beta 430 RR-Race Edition Base 2024
Beta 430 RR-Race Edition Base 2025
Beta 430 RR-S Base 2020
Beta 430 RR-S Base 2021
Beta 430 RR-S Base 2022
Beta 430 RR-S Base 2023
Beta 480 RR Base 2020
Beta 480 RR Base 2023
Beta 480 RR Base 2024
Beta 480 RR X-Pro Base 2025
Beta 480 RR-Race Edition Base 2020
Beta 480 RR-Race Edition Base 2021
Beta 480 RR-Race Edition Base 2022
Beta 480 RR-Race Edition Base 2023
Beta 480 RR-Race Edition Base 2024
Beta 480 RR-Race Edition Base 2025