The FMF Megabomb Stainless Steel Header, manufacturer part number 045664 and vendor part number 045664, is engineered for riders seeking stronger, more responsive performance from compatible Beta off-road motorcycles. As the next evolution in FMF PowerBomb technology, the Megabomb header is designed to improve exhaust flow and deliver substantial power increases throughout the usable rpm range. Its stainless steel construction provides a durable solution for demanding trail and off-road riding conditions.
Featuring an advanced Megabomb expansion design, this header helps optimize exhaust gas movement while supporting improved throttle response and overall engine performance. The lightweight construction helps reduce unnecessary weight compared with conventional exhaust components, making it well suited for performance-focused riders who want a practical upgrade without compromising durability. The FMF brand is recognized for purpose-built motorcycle exhaust systems, and this component is designed for straightforward integration with the listed Beta applications.
Fitment includes 2020 Beta 350 RR, 2020 Beta 350 RR (RE), 2020 Beta 390 RR (RE), 2021 Beta 350 RR, 2021 Beta 350 RR (RE), 2021 Beta 390 RR (RE), 2022 Beta 350 RR, 2022 Beta 350 RR (RE), 2022 Beta 390 RR, and 2022 Beta 390 RR (RE). Verify the motorcycle model and year before installation to ensure proper compatibility. The FMF Megabomb Stainless Steel Header 045664 is supplied as a performance-oriented replacement or upgrade for riders who want enhanced exhaust technology and dependable fitment for their Beta 350 RR or 390 RR.
Features:
- Megabomb technology: The next evolution in FMF PowerBomb exhaust header design.
- Power improvement: Designed to provide substantial power increases throughout the rpm range.
- Lightweight construction: Built with extremely lightweight materials to help reduce overall exhaust-system weight.
- Stainless steel design: Provides durable construction for demanding off-road use.
- Fitment: Fits select 2020–2022 Beta 350 RR, 350 RR (RE), 390 RR, and 390 RR (RE) motorcycles.
Fitment:
2020 Beta 350 RR
2020 Beta 350 RR (RE)
2020 Beta 390 RR
2020 Beta 390 RR (RE)
2021 Beta 350 RR
2021 Beta 350 RR (RE)
2021 Beta 390 RR
2021 Beta 390 RR (RE)
2022 Beta 350 RR
2022 Beta 350 RR (RE)
2022 Beta 390 RR
2022 Beta 390 RR (RE)
2023 Beta 350 RR
2023 Beta 350 RR (RE)
2023 Beta 390 RR
2023 Beta 390 RR (RE)
2024 Beta 350 RR
2024 Beta 350 RR (RE)
2024 Beta 390 RR
2024 Beta 390 RR (RE)
2025 Beta 350 RR
2025 Beta 350 RR (RE)
2025 Beta 390 RR
2025 Beta 390 RR (RE)
2026 Beta 350 RR
2026 Beta 350 RR (RE)
2026 Beta 390 RR
2026 Beta 390 RR (RE)