Q4 Hex Exhaust Silencer 21-24 Kawasaki KX 250 F X - FMF 042393
The FMF Q4 HEX S/A 042393 is a slip-on exhaust system designed for off-road riding. It features advanced chambering, baffles, and multi-stage packing material to deliver power gains across the RPM spectrum while adhering to noise regulations. This exhaust is lighter than stock and includes a built-in spark arrestor, making it suitable for riders seeking durable, low-sound performance. It meets USFS and FIM World Enduro sound requirements. Construction includes an aluminium body with stainless steel midpipe and endcap. Specifications include a weight of 6.9 lbs. Notice: Closed Course Use Only. Item ID: 042393. Configuration: Single. Spark Arrestor: Screen Insert (included). Quiet Insert: Included. Carb Warning: No. Manufactured in the USA.
- SKU
- 06-9950.FMF.Q4H
- Brand
- FMF Exhausts
- Availability
- In Stock (2)
FULL DESCRIPTION
FMF Q4 Hex Exhaust Silencer
The FMF Q4 Hex S/A exhaust system is engineered to deliver exceptional performance while adhering to strict noise regulations for off-road riding. It utilizes advanced chambering, baffles, and a proprietary multi-stage packing material to achieve significant power gains across the entire RPM range. This slip-on system is designed to be lighter than stock, contributing to improved handling and responsiveness. The integrated spark arrestor enhances safety, making it an ideal choice for riders seeking durable, compliant, and quiet performance. Proudly manufactured in the USA, this exhaust system is built to withstand demanding off-road conditions.
Key Features:
- Incorporates quiet technology for reduced sound output and improved access to noise-controlled areas.
- Meets USFS and FIM World Enduro sound requirements for legal off-road use.
- Delivers substantial power increases across the entire RPM range.
- Includes an integrated spark arrestor for enhanced safety.
- Lighter than most OEM systems, improving machine handling and responsiveness.
- Robust construction built for demanding off-road conditions.
- The only US manufacturer providing purpose-built quiet exhausts.
- Manufactured in the USA.
Specifications:
- Item ID: 042393
- Type: Slip-On
- Configuration: Single
- Construction Material: Aluminium
- Finish: Natural
- Midpipe Material: Stainless Steel
- Endcap Material: Stainless Steel
- Spark Arrestor: Screen Insert (included)
- Quiet Insert: Included
- Weight: 6.9 lbs
Note: This product is intended for Closed Course Use Only.


