Factory 4.1 muffler available in natural titanium or blue anodized titanium with titanium end caps The lightest mufflers available Superior power and performance - horsepower improved throughout the rpm range Feature exclusive proprietary Chamber Core technology Factory Forward Engineering centralizes mass, improves handling Made from premium quality American materials Customize with performance tuning inserts and spark arrestor module Meet AMA sound requirements on most models; inserts available for others 2021-2022 Kawasaki KLX 140R L - - 2021-2022 Kawasaki KLX 140R F - - 2021-2022 Kawasaki KLX 140R - - 2017-2020 Kawasaki KLX 140 G - - 2008-2020 Kawasaki KLX 140 - - 2008-2020 Kawasaki KLX 140 L - - Fitment Disclosure This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.