Description
FMF’s Q4 HEX S/A 041617 exhaust brings advanced quiet performance technology to off-road riding, delivering impressive power gains while minimising sound output. Built with proprietary multistage packing materials and an internal design of intricate chambers and baffles, this slip-on system is engineered for endurance and meets stringent USFS and FIM sound standards. Proudly manufactured in the USA, the Q4 HEX is ideal for riders demanding durability, weight savings, and legal sound compliance—making every ride both thrilling and responsible.
Features
- Premium quiet technology: intricate chambers, baffles, and multistage packing for low sound levels
- Meets USFS and FIM World Enduro sound requirements
- Delivers power gains throughout the entire rpm range
- Lighter than OEM exhausts for improved handling
- Rugged construction for demanding off-road use
- Stainless steel midpipe and endcap with grey anodised aluminium body
- Includes spark arrestor and 94 dB quiet insert
- Designed and manufactured in the USA
- Closed course use only
Specifications
- Item ID: 041617
- Type: Slip-On
- Configuration: Single
- Construction: Aluminium
- Finish: Grey Anodised
- Midpipe: Stainless Steel
- Endcap: Stainless Steel
- Spark Arrestor: Screen Insert (included)
- Quiet Insert: 94dB (included)
- Carb Warning: No
Vehicle Fitment
Honda
- CRF250R (2025–2026)
- CRF250RX (2025–2026)