Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

After removing and disassembling my FMF Factory 4.1 dirt bike silencer, I saw that the inner core was cracked and extremely rusty (having the potential for more cracks). I definitely want to fix this so that I'm not riding with a faulty silencer.

Is there anywhere that I can buy just the core? Or should I just go ahead and spend the money for a new silencer?

share|improve this question
up vote 1 down vote accepted

Give your local motorcycle dealership a call. FMF does make replacement cores and these are very likely available from your local FMF dealer.

This mfg part number will help you find what you're looking for: 040261

Confirm on their web page:

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.