The FMF Q4 Spark Arrestor Exhaust Muffler, manufacturer part number 042321 and vendor part number 79-4197, is designed for Kawasaki KLR650 motorcycles from 2008 through 2017. This performance muffler provides improved exhaust flow while maintaining controlled sound output, making it suitable for trail, dual-sport, and off-road riding applications. Its fitment includes the 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, and 2017 Kawasaki KLR650.
The Q4 uses internal baffles, chambers, and advanced sound-absorbing materials to accelerate exhaust flow with minimal power loss and reduced noise. FMF engineered this system to remain well below the 96 dB sound level on most machines, helping riders meet strict sound requirements while enjoying responsive exhaust performance. The muffler is built for dependable use in demanding riding environments.
A U.S. Forestry-approved spark arrestor is included for responsible off-road operation. The maintenance-free stainless steel spark arrestor screen helps prevent exhaust sparks from escaping without requiring frequent servicing. The FMF Q4 is a practical replacement or upgrade for riders seeking durable construction, controlled sound, and efficient exhaust performance for their compatible Kawasaki KLR650.
Features:
- Internal baffles, chambers, and advanced sound-absorbing materials accelerate exhaust flow with reduced noise and minimal power loss
- Sound output remains well below 96 dB on most machines to help satisfy strict sound requirements
- U.S. Forestry-approved spark arrestor supports compliant off-road riding
- Maintenance-free stainless steel spark arrestor screen requires minimal upkeep
- Fits 2008–2017 Kawasaki KLR650 motorcycles
- Brand: FMF
- Model: Q4
- Manufacturer part number: 042321
- Vendor part number: 79-4197
Fitment:
2008 Kawasaki KLR650
2009 Kawasaki KLR650
2010 Kawasaki KLR650
2011 Kawasaki KLR650
2012 Kawasaki KLR650
2013 Kawasaki KLR650
2014 Kawasaki KLR650
2015 Kawasaki KLR650
2016 Kawasaki KLR650
2017 Kawasaki KLR650
2018 Kawasaki KLR650