FMF 4.1 to standard header question

Hi guys,

i recently bought a FMF Factory 4.1 slip on exhaust to suit my 10' Wr450

im in australia and i purchased it from the states. fit perfectly but the only thing is that the standard band clamp where the mid pipe joins to the header is to big even once tightened all the way?

Does FMF sell their own clamp to suit? Would their be any other yamaha clamps that are smaller?



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