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KAS

WR muffler on a YZ

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Has anybody done this?

I just brought my YZ450F home. Holy buckets, its loud! I figure I could find stock WR muffler somebody has taken off for a good deal, if it would work ok.

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i think it will fit, the yz and wr use the same aftermarket exhaust part numbers. it will cork it up though and you might need to re jet it.

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wr muffler is a little more restrictive..

guys put yz mufflers on their wr's to get more hosepower.

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Don't put a WR can on your YZ, a quiet pipe will give better performance and weigh less. Nearly everyone offers them now, the ones I seem to hear the most good about are the FMF 's and Leo Vince 's.

OT- where in OR are ya?

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Has anybody done this?

I just brought my YZ450F home. Holy buckets, its loud! I figure I could find stock WR muffler somebody has taken off for a good deal, if it would work ok.

Don't use the Wr pipe, it is way to restrictive. I just took one off of mine and used the yzf can.

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it will be quieter but have way less power, it has a AIS system i believe, i think that lets air into it somehow to decrease the emissions. someone please correct me if im wrong lol.

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I'm really not too worried about losing a couple ponies on a 450.

It just needs to be more quiet.

I think I might look into a Leo Vince. My buddy has one on his '07 and has passed 96dB sound tests.

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