Exhaust Header FMF MegaBomb — Honda CRF 450 R, CRF 450 RX 2021–2026 (4T)

The FMF MegaBomb is a four-stroke header with an expanded chamber right behind the head. It gives you the bottom end of a long header and the top end of a short one — which on a conventional header are mutually exclusive. The chamber also acts as a pre-muffler, cutting sound output by around 1.5 dB and working well with quieter silencers. The shorter build is less vulnerable in the terrain than a long header. The Ti-Metal version is titanium. Fits: Honda CRF 450 R (2021–2026); Honda CRF 450 RX (2021–2026). Specifications — material: Stainless Steel, finish: Stainless Steel, configuration: 1-Into-1 System. Note: does not meet the 2025 FIM sound limit — intended for practice and closed courses, not for FIM-sanctioned racing. Delivery 5–8 working days. SKU: 041598.