FAQ'S

We see thousands of emails every year with many of them being the same questions over and over again. We've pooled our frequently asked questions for you to review to help solve your problem or just answer your question.

• What does Gold Series mean?
• What does the Fatty pipe do?
• What does the Gnarly pipe do?
• What does the Rev pipe do?
• What does the SST pipe do?
• What does each 4-stroke header do: PowerBomb, Hi-Flo, SX versions?
• How many discs should I run on my MegaMax?

• What does each pipe do with FMF silencers as opposed to a stock silencer?
• Why does FMF offer so many different types of exhaust systems?
• How do FMF silencers work with a stock pipe?
• What is the difference between a Shorty and a standard silencer besides the length?
• What do I gain by using an FMF silencer?
• What combo of pipe and silencer works best on my bike?
• How do I find out what FMF offers for my bike or ATV?
• What pipe and silencer do I use if I've had motor work done?

• What jetting do I use?
• Why is my pipe louder now than when I first purchased it?
• Why should I repack my silencer?
• How often should I repack my silencer?
• What should I repack my silencer with?
• My bike/ATV tests too loud to pass for my riding area. What tricks can I do to make it quieter?
• Do dents in a pipe make a big difference in power, and can you fix them?
• If I buy your silencer now, can I get the pipe later and will they fit?
• How much power will I gain using FMF products and will I notice a difference?
• Can I run one of your headers with my stock muffler?
• If I buy your muffler now, can I get the header later and will they fit?

• How do I get sponsored?
• Where will the FMF rig be next?
• What does FMF stand for?