Full Exhaust System FMF Factory 4.1 RCT — Honda CRF 250 R, CRF 250 RX 2025–2027, carbon, grey (4T)

Description

The FMF Factory 4.1 RCT is FMF's flagship four-stroke silencer. RCT (Resonance Chamber Technology) is a patented core shape that pulls the noise down while keeping the power up — so you can ride where the decibels get measured without giving up performance. Internal ducts in the chambers increase volume and improve flow, so power rises across the whole rev range. Factory Forward Engineering centralises mass, which helps handling and reduces crash damage. The rear end cap opens with four screws — you swap a tuning insert or spark arrestor without taking the silencer off. Works with the stock header or an FMF one. Fits: Honda CRF 250 R (2025–2027); Honda CRF 250 RX (2025–2027). Specifications — muffler material: Aluminum, pipe material: Stainless Steel, end cap material: Carbon Fiber, muffler finish: Gray, Anodized. Delivery 5–8 working days. SKU: 041620.