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Stock exhaust?

1213 Views 6 Replies 4 Participants Last post by  kenfyoozed
this is on my 2009. i assume this is the stock ehaust. it has a yamaha part number on it. but what about thw tip? i havent seen a picture of one like this. so is this stock? sounds very nice.

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I thought as much..... So what gains or losses can be had performance wise from doing this? And who makes this part? asi wouldnt mind having it on my other tdub as well.

If the TW has not been rejetted, you may be very lean depening on your altitude. You may have more pep and better throttle response, but it will at the expense of engine reliability.
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