I hated my FMF fatty pipe on the 250r. I was actually eye balling that sectional on Ebay as a suitable pipe I could run for normal riding, looks nice
I have a ct pipe like the one your looking at it pulls pretty good in the midrange .I really want the other pipe he is selling but it looks like to much of a project for me http://www.ebay.com/itm/1985-1986-AT...0d6cfa&vxp=mtr
I have run the Fatty on a stock cylinder set up for high compression with a 38 AS carb. And let me tell you, it was not a top end screamer by any means, but even though it was still stock ported, it pulled very strong in the mid. And I will say this, I felt a bigger boost in the seat of the pant dyno with the carb, not the pipe. But the whole package seemed to run pretty strong IMHO for a stock port. I'm not saying it was a freak giant killer, but it was significantly better than stock.
Now my 350 ESR with TRX9 port, race fuel dome, 38 AS carb ESR pipe and ESR reeds really shines in the mid-top. Keeps on pulling when the other setup would sign off looking for the next higher gear. I do plan on upgrading to a 40.5 PWK to complete the build focus. I think my 38mm might be holding it back just a little possibly....
Last edited by RIDE-RED 250r; 01-24-2014 at 05:08 PM.
Trikes:
'85 ATC 350R
'85 ATC 250R
'86 ATC 350X
'85 ATC 350X
'84 ATC 200ES Big Red
'84 ATC 125M
'85 ATC 110
'85 ATC 70/110
If you have bought from me or sold to me, please leave me feedback here>>> http://www.3wheelerworld.com/showthr...+RIDE-RED+250r
The guy selling this stuff is a member here ....They call him MR. Clean ...Shot him a PM and chat with him....
I run my stock cylinder w/ vforce and 36mm carb and the DG National Expansion...LOVE IT! Instant abrupt power from bottom through the mid but if you want to be able to rev to the moon this is not the pipe for you, my old fatty reved further for sure, that's my 2 cents
86 350X ::: 85 250R
Projects
350x
Come and Gone
86 350x : 84 250r X2
85 350x X2 : 84 200es X3
83 200e : 78 ATC90
Find a PSI if you want revs and bottom end
too many bikes to count. too little time on hand.
Trikes:
'85 ATC 350R
'85 ATC 250R
'86 ATC 350X
'85 ATC 350X
'84 ATC 200ES Big Red
'84 ATC 125M
'85 ATC 110
'85 ATC 70/110
If you have bought from me or sold to me, please leave me feedback here>>> http://www.3wheelerworld.com/showthr...+RIDE-RED+250r
Guess I am one of the only people that like the FMF Fatty exhaust. Mine has a killer midrange hit that revs out nice on the top end. Until I ride another 250r and notice a big difference between exhausts or mine falls apart it will never leave my trike.
1985 Honda 250r