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  • FMF Racing Yamaha YFZ450 2004-09 / 2012-15 Factory 4.1 Complete Exhaust System W/ SS PB Header
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FMF Racing Yamaha YFZ450 2004-09 / 2012-15 Factory 4.1 Complete Exhaust System W/ SS PB Header
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FMF Racing Yamaha YFZ450 2004-09 / 2012-15 Factory 4.1 Complete Exhaust System W/ SS PB Header

FMF044208
Out of stock
Muffler
$799.99 $647.50
The FMF Racing Factory 4.1 Complete Exhaust System w/ SS PB Header is engineered for riders...
customers are viewing this product
FMF Racing Yamaha YFZ450 04-09/12-15 Q4 S/A Muffler
FMF Racing Yamaha YFZ450 04-09/12-15 Q4 S/A Muffler
$449.99 $370.50
FMF Racing Yamaha YFZ450 2004-09 / 2012-15 SS Factory 4.1 SO Muffler
FMF Racing Yamaha YFZ450 2004-09 / 2012-15 SS Factory 4.1 SO Muffler
$549.99 $449.50
FMF Racing Yamaha YFZ450 2004-09 / 2012-15 Factory 4.1 Complete Exhaust System W/ SS PB Header
Description

The FMF Racing Factory 4.1 Complete Exhaust System w/ SS PB Header is engineered for riders demanding top-tier performance for their Yamaha YFZ450. Designed to optimize power delivery and reduce weight, this full exhaust system is the perfect choice for both competitive and recreational riders.

Features:

  • Optimized fit for Yamaha YFZ450 (2004–2009, 2012–2015 models).
  • Stainless Steel PowerBomb (SS PB) Header enhances midrange power and reduces decibel output.
  • Lightweight anodized aluminum muffler for improved handling and durability.
  • Aggressive sound profile designed for racing and high-performance environments.
  • TIG-welded construction for enhanced strength and longevity.
  • Easy installation with a precise fit for supported models.

Specifications:

Specification Details
Compatibility Yamaha YFZ450 (2004–2009, 2012–2015)
Header Material Stainless Steel
Muffler Material Lightweight Aluminum
Spark Arrestor Included and removable
Application Full system replacement

Compatibility & Fitment:
This system is specifically designed for Yamaha YFZ450 models produced from 2004–2009 and 2012–2015. The stainless-steel header and lightweight muffler ensure a perfect fit and improved performance.

Performance Benefits & Maintenance:
The FMF Factory 4.1 Exhaust System delivers an impressive boost in power, especially in the midrange, while reducing weight for better ATV handling. To maintain peak performance, clean the muffler regularly and repack it as needed. Inspect the header for debris or damage after intense rides.



REVIEWS

C.H.

Upgraded my 2007 YFZ450 with this exhaust, and it’s like a new machine! The power gains are noticeable, and the sound is just perfect.

Chris H.

Denver, CO

S.T.

Perfect fit for my 2015 YFZ450. The performance boost is incredible, and installation was straightforward. Worth every penny!

Sarah T.

San Diego, CA

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