Your thoughts on the ESR ATC Pipe

[coyleatc]

I have an 85 250R, with Prox cylinder, 330 kit (bore and stroked) that runs on methanol. Currently, I am using a out of frame drag pipe and the bike runs well but it can be difficult as a duner. Has any used the ESR pipe in a similar application? Also, has anyone used an FMF silencer with this pipe? I would like to get the FMF quiet core with spark arrester so I am legal at the dunes. Thanks.

[deathman53]

they are good pipes, however, when I had my 330 with that pipe it ran very hot. You really need a big bore pipe for that setup. over 310's need a big bore pipe, to handle the exhaust volume.

[oldsking86]

Might want to look into having a custom in frame pipe made for it.. Might wanna contact Bryan Raffa and see who made the one for his 490 tri-Z, sure they could make an inframe for a 250r