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FMF

FMF Factory 4.1 RCT Exhaust System Yamaha YZ450F / YZ450FX / WR450F 2014-2018

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Material:

Blemished/Refurbished

This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

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FMF Factory 4.1 RCT Exhaust System Yamaha YZ450F / YZ450FX / WR450F 2014-2018 Instructions

Header Installation Instructions (pdf)

FMF Factory 4.1 RCT Full Exhaust Yamaha YZ450F / YZ450FX / WR450F

The FMF Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology both internally and externally. In addition, FMF has achieved a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering which moves the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from aerospace grade materials that meet FMF’s exacting specifications and is manufactured 100% in their Southern California factory.

Features:

Massive power gains throughout the RPM range
Huge weight savings over stock exhaust
RTS (Rapid Tuning System) for quick and easy track-side tuning
Removable spark arrestor included
MegaBomb Header
Quiet insert sold separately
Meets AMA and FIM sound requirements
100% made in the USA

Weight:

Stainless Steel / Aluminum / Carbon end cap 7.5 lbs
Titanium / Titanium / Carbon end cap 5.7 lbs