Description
- If performance is your priority, the Factory 4.1 is the exhaust for you
- Used by Factory teams such as KTM, Epic Can-Am and Rath Racing
- Accepts optional quiet inserts and spark arrestors
- For use with FMF Powerbomb, FMF Megabomb, or stock header
- FITS – 2004-2009, 2012-2015 Yamaha YFZ 450 4×2
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