yz450f exhaust fmf question...

Just got a 2004 450f with FMF factory4 exhaust muffler and the stock clamp is too big...my buddy doesn't use a clamp?? Should I use one? Its a tight fit, but I don't want to reassemble everything until I check with you guys. thanks!

FMF says to use high temp. silicone and no clamp. It works fine.

Thanks! Will get it done tonight!

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