FMF 4.1 RCT Full Exhaust System - 2024 KTM 450 SX-F | TESTED 

Nice silencer, but be aware that they are built light and the end cap is the only spare part that FMF will sell you. The blue can will crush and fold WAY easier than stock. Mine lasted only a handful of rides, taking many dents and scratches. First mild loop out that didn’t even break the fender was the end of it.

You do feel the difference for sure only problem is replacements if you crash and dent the header, megabomb they won’t replace it. Plus prices are 😢

Fmf 4.1 rct on exc 350 six days 2024 does it fits?

Felt no difference from stock but it looks cool 🤷‍♂️

Definitely not worth the money, header folds like a piece of paper and you cant buff scratches out of the silencer, no way to refresh the silencers anodizing. Negligible performance gains, sometimes less performance than stock. These guys are absolutely nuts for asking this much. fmf 🖕