I am in the market for a new pipe for my YFZ 450, there are a few things I am looking for. I ride the dunes 90% of the time so a mid to top end pipe is a must, I live in Oregon so it will need to have some type of quiet core, and last I want to have a ceramic coating. What is the best performing pipe with these qualities.
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you might want to check out the gyt-r or yosh...you could get both of those with a quiet insert. As for ceramic coating, I don't think either of them have it. But you could have it done.

 

i hear for mid to top esr is suppose to be really good.

 

HMF has a quiet core. I would reccomend Alba, but you have to ride with no db limit to run a pipe like that.

 

Just dont worry about the decibal level...thats what I do and I haven't gotten a ticket in years. Just pick the pipe that suites you best.

 

Really... I've riden in the environazi state (CA) twice in the recent past and have not even come close to any sort of sound issue, or even thinking I was going to have a problem. Just ride sensible where you know you should and let all hell break loose where you know you can.

 

IMO i would get a low to mid pipe and do the cam mod.