The FMF Q4 Spark Arrestor Silencer, part number 044210, is designed for Yamaha YFZ450 models from 2004 through 2009 and 2012 through 2013. Developed through years of championship off-road racing, the Q4 delivers strong exhaust performance with a lightweight design that weighs less than the stock silencer. Its practical construction provides dependable performance for off-road riding and racing applications.
Designed to work with either the stock Yamaha header or an FMF header, this FMF silencer offers flexible installation options for riders upgrading their exhaust system. The integrated spark arrestor is included, helping support responsible off-road use where spark-arresting equipment is required. The silencer is also easy to repack, making routine maintenance more convenient and helping extend service life.
The FMF Q4 is engineered for a maximum sound output of 96 dB, while most applications remain below 93 dB under applicable testing conditions. This product is intended for off-road and race use. It is not legal for use in California on pollution-controlled vehicles; California race-use restrictions apply, and a waiver may be available. Verify local regulations and vehicle fitment before installation.
Fitment includes the 2004, 2005, 2006, 2007, 2008, and 2009 Yamaha YFZ450, as well as the 2012 and 2013 Yamaha YFZ450. Manufacturer and vendor part number: FMF 044210.
Features:
- Racing-developed FMF Q4 silencer designed for off-road performance
- Compatible with the stock Yamaha header or an FMF header
- Maximum sound output of 96 dB; most models are below 93 dB
- Lightweight construction weighs less than the stock silencer
- Built-in spark arrestor included
- Easy-to-repack design simplifies maintenance
- Fits 2004-2009 and 2012-2013 Yamaha YFZ450 models
- Not legal for California use on pollution-controlled vehicles; race use only in California, with waiver availability
Fitment:
2004 Yamaha YFZ450
2005 Yamaha YFZ450
2006 Yamaha YFZ450
2007 Yamaha YFZ450
2008 Yamaha YFZ450
2009 Yamaha YFZ450
2012 Yamaha YFZ450
2013 Yamaha YFZ450