Factory 4.1 RCT Slip-On Exhaust Silencer 24-25 Kawasaki KX 450 F X - FMF 042403
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The FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap is engineered with Resonance Chamber Technology. It features a carbon end cap and a compact design for reduced crash damage vulnerability. This slip-on silencer centralises mass and delivers exceptional power gains across the RPM range. Constructed from aerospace-grade materials, it provides significant weight savings and is optimised for rapid tuning and easy fitment. Features include FMF Resonance Chamber Technology, a shortened crash-resistant structure with Factory Forward Engineering, significant power boosts, a lightweight aluminium canister with carbon end cap, and a Rapid Tuning System. It is manufactured from premium alloy-grade titanium and stainless steel. A 94dB quiet insert and spark arrestor screen are included. This product is designed for closed course use only. Item ID 042403. Type: Slip-On. Configuration: Single. Construction: Aluminium (muffler), Stainless Steel (midpipe), Carbon (end cap). Finish: Gray anodised. Spark Arrestor: Screen insert included. Quiet Insert: 94dB insert included. Carb Warning: No. Intended use: Closed course.
- SKU
- 07-4005.F41.A
- Brand
- FMF Exhausts
- Availability
- In Stock (2)
Fitments (4)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 450F | 2024 |
| KAWASAKI | KX 450F | 2025 |
| KAWASAKI | KX 450X | 2024 |
| KAWASAKI | KX 450X | 2025 |
- SKU
- 07-4005.F41.A
- Brand
- FMF Exhausts
- Availability
- In Stock (2)
FULL DESCRIPTION
FMF Racing Factory 4.1 RCT Slip-On Exhaust Silencer with Carbon End Cap
Elevate your motorcycle's performance with the FMF Racing Factory 4.1 RCT Slip-On Exhaust Silencer. Engineered with advanced Resonance Chamber Technology™, this silencer is designed to deliver substantial power gains across the entire RPM range. Its compact and shortened structure, featuring Factory Forward Engineering, offers improved crash resistance and centralizes mass for better handling.
Key Features:
- Utilizes FMF's Resonance Chamber Technology™ for enhanced acoustics and performance.
- Compact, crash-resistant design with Factory Forward Engineering.
- Provides significant power increases throughout the RPM band.
- Lightweight aluminum canister construction.
- Stylish carbon fiber end cap.
- Features a Rapid Tuning System for quick and easy adjustments.
- Constructed from premium alloy-grade titanium and stainless steel.
- Includes a 94dB quiet insert and a spark arrestor screen.
- Optimized for rapid tuning and simple fitment.
- Designed for closed course use only.
Specifications:
- Type: Slip-On
- Configuration: Single
- Muffler Construction: Aluminum
- Midpipe Construction: Stainless Steel
- End Cap Construction: Carbon Fiber
- Finish: Gray anodized
- Spark Arrestor: Included as a screen insert
- Quiet Insert: 94dB insert included
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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