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FMF Factory - 4.1 RCT Aluminum Silencer With Carbon End Cap - Yamaha WR /YZ 450F /FX (14-18)

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FMF Factory - 4.1 RCT Aluminum Silencer With Carbon End Cap - Yamaha WR /YZ 450F /FX (14-18)

Please see below for fitiment.


This is a special order item. After your order is placed with us, we quickly order the special order item directly from our supplier. The item is shipped to us, then we quickly ship the item to you.In stock special order

Ships today if ordered in the next 11 hours and 59 minutes!



There is no denying the FMF Factory 4.1 RCT Aluminum Silencer with Carbon End Cap is the cream of the crop when it comes to exhaust for your motorcycle.

The quality is apparent right from the get go. The larger aluminum alloy body houses FMF’s unique Resonance Chamber Technology™ (RCT) at the front of the slip-on, which lowers decibels to ensure compliance with FIM 2M max sound tests and stringent AMA sound requirements.

While the RCT lowers sound, it does more than just maintain your bike’s maximum output. The patented chamber design refines and enhances your exhaust pressure, giving you tunable gains throughout your rpm range. The carbon fiber end caps let you put these gains right where you need them with quick insert tuning tips or spark arrestors. Swapping between tips or servicing your exhaust won’t be a hassle since access is made easy with four screws on the end cap.

Everyone knows FMF walks the walk and talks the talk. Quality components and extensive knowledge combine in the FMF Factory 4.1 RCT Silencer to make it a slip-on that will rock your dirt bike’s world.

• Rapid Tuning System (RTS)
• Fits on FMF or OEM header
• Resonance Chamber Technology (RCT)
• Increased packing material volume
• Meets AMA and FIM sound requirements
• Quiet Core 94db insert included
• Spark arrestor included in muffler
• 100% American made in California
• Easily maintained and repacked

Bike Fitment

YAMAHA WR450F 2016-2018
YAMAHA YZ450F 2014-2017
YAMAHA YZ450FX 2016-2018

Additional Information

Additional Information

SKU 1463610001
Barcode No
Manufacturer FMF