The FMF Factory 4.1 RCT titanium slip-on exhaust is engineered for Kawasaki KX250F and KX250X models from 2021 through 2024. Manufacturer part number 042396, also identified by vendor part number 79-42936, combines FMF's Resonance Chamber Technology with a lightweight titanium canister and mid-pipe. The system is designed to reduce sound while maintaining strong power output, making it suitable for motocross and off-road applications where performance, sound control, and durability are important.
Patented FMF technologies refine exhaust pressure and improve internal sound absorption without compromising engine performance. The Factory Forward Engineering layout centralizes mass and helps reduce exposure to crash damage, while application-specific core specifications provide a tuned fit for the listed Kawasaki motorcycles. An innovative rear end cap allows simple installation of tuning tip inserts or a spark arrestor, providing added flexibility for different riding environments.
This FMF Factory 4.1 RCT system includes a spark arrestor and wash plug for convenient maintenance and trail-ready use. The precision-fit slip-on design is intended for installation with the factory header and is compatible with 2021 Kawasaki KX250X, 2021 Kawasaki KX250F, 2022 Kawasaki KX250F, 2022 Kawasaki KX250X, 2023 Kawasaki KX250F, 2023 Kawasaki KX250X, 2024 Kawasaki KX250F, and 2024 Kawasaki KX250X models. Verify the motorcycle model and year before installation.
Features:
- Resonance Chamber Technology: Uses FMF's latest chamber design to lower sound levels while maintaining strong power output.
- Patented Core Shape: Helps reduce exhaust noise without restricting performance.
- Patented Canister Design: Increases internal volume for additional sound-absorbing material.
- Refined Exhaust Pressure: Patented chamber engineering is tuned to enhance exhaust flow and response.
- Factory Forward Engineering: Centralizes exhaust mass and helps reduce vulnerability to crash damage.
- Application-Specific Tuning: Uses optimized core specifications for Kawasaki KX250F and KX250X applications.
- Rear End Cap: Supports simple installation of tuning tip inserts or the included spark arrestor.
- Titanium Construction: Features a titanium canister and mid-pipe for a lightweight performance-oriented design.
- Included Accessories: Includes spark arrestor and wash plug.
- Fitment: Fits 2021-2024 Kawasaki KX250F and KX250X models.
Fitment:
2021 Kawasaki KX250F
2021 Kawasaki KX250X
2022 Kawasaki KX250F
2022 Kawasaki KX250X
2023 Kawasaki KX250F
2023 Kawasaki KX250X
2024 Kawasaki KX250F
2024 Kawasaki KX250X