05 YZ 450 exhaust question

just got back into riding , now im in the market for a slip on exhaust. looking for nice sound and of course good power. heard pro circuit makes a nice one. any suggestions? i have been out of the scene for a while.

Hi there I ride a 2006 YZ450F and I relise that they are different but......If your not going to be racing the bike I would NOT put on an aftermarket exhaust just for the fact that shes bikes don't really need any more power they have lots to begin with, and it is very very hard on the engine....the stock pipes are tuned for the engin the best. But if you must go with an aftermarket pipe your right on that pro circuit does make the best and safest for the YZ450F. Hope this helps.

bikes don't really need any more power they have lots to begin with, and it is very very hard on the engine....the stock pipes are tuned for the engin the best.

1) The bikes can sometimes use more power in certain areas. Some exhausts help with bottom end, some up high in the RPMS. Mine gave me a bit more top end.

2) Since these bikes have virtually no restriction in their exhaust flow, explain to me how a different exhaust would be "very very hard" on the engine. This is true up until 08, when I believe Yamaha introduced a muffler which was more restrictive.

3) Again, similar to #1. The stock pipes are tuned well, but aftermarket pipes will move the power around.

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