Fastway by Pro Moto Billet now has spark arrestors for the 2017 KTM 125SX, 150SX, and 150 XC-W models. These spark arrestors convert your stock muffler into a U.S.F.S-approved spark arrested muffler. When the spark arrestor screens are not required, such as at the MX track, you can simply remove two machine screws on each end cap and take out the screens. Each end cap is machined out of solid 6061 aluminum and anodized with a protective finish.
Each spark arrestor includes an end cap assembly with a removable nozzle, a spark arrestor screen, and all required mounting hardware. Read the installation instructions for model-specific installation requirements.
You can get the spark arrestors for o$149.95 (P/N PMB-01-3109).
Visit Pro Moto Billet's website for more info.