best pipe for crf250???

bw51
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bw51
Edited Date/Time 9/10/2015 8:29am
Am looking at the FMF 4.1 with mega bomb or a pro circuit for my 2011 crf250... thoughts and experience please guys??
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48dirtbikekid
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48dirtbikekid 12/3/2013 5:40pm
12/3/2013 5:40pm
I've used a PC one on a stock practice bike and it worked really well and didn't require any mapping changes ( all though you'd benefit from doing that as well) noticeable gains throughout the powerband. IMO its a good all around exhaust. Not sure about the FMF system, I'm sure it works good as well.
Socket946
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Socket946 12/3/2013 5:41pm
12/3/2013 5:41pm
everyone will tell you FMF or the yoshi.

I bought the DRD, and it's been terrific.
bw51
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bw51 12/3/2013 5:46pm
12/3/2013 5:46pm
Thanks guys im slightly swayed to pc as know the lucas oil team use the ti-5
The Rock
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The Rock 12/3/2013 5:49pm
12/3/2013 5:49pm
TLD Lucas Oil team just switched to FMF.

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bw51
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bw51 12/3/2013 5:54pm
12/3/2013 5:54pm
The Rock wrote:
TLD Lucas Oil team just switched to FMF.
really?? wow didnt know that
Kyle978
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Kyle978 12/3/2013 6:13pm
12/3/2013 6:13pm
I work for a privateer and a couple months ago we were finishing up our motor package for 2014 on our 2013 CRF250's. We tested the PC, FMF, Yosh and Akrapovic back to back on the dyno. All the pipes were very close, FMF and Yosh were nearly identical, and the Akrapovic and PC had a little less power throughout, although they both are MUCH quieter than the FMF and Yosh. Props to them. We are running the PC Ti-5 because it was the quietest, but had better performance than the Akrapovic. I don't wanna deal with sound testing issues on race day.

IMO, buy whichever you can get the best deal on because they are about the same.
bw51
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bw51 12/3/2013 6:19pm
12/3/2013 6:19pm
Kyle978 wrote:
I work for a privateer and a couple months ago we were finishing up our motor package for 2014 on our 2013 CRF250's. We tested the...
I work for a privateer and a couple months ago we were finishing up our motor package for 2014 on our 2013 CRF250's. We tested the PC, FMF, Yosh and Akrapovic back to back on the dyno. All the pipes were very close, FMF and Yosh were nearly identical, and the Akrapovic and PC had a little less power throughout, although they both are MUCH quieter than the FMF and Yosh. Props to them. We are running the PC Ti-5 because it was the quietest, but had better performance than the Akrapovic. I don't wanna deal with sound testing issues on race day.

IMO, buy whichever you can get the best deal on because they are about the same.
thanks ... is tough as read bad and good reports about the pc and fmf... i have a friends who works in parts at my local dealership and can get resonable deal on fmf pc and yosh so just need to make my mind up!
Think the pc look a better pipe but know thats no deal breaker
mtl
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mtl 12/3/2013 10:16pm
12/3/2013 10:16pm
Custom motor package will respond differently than a close to stock motor, therefor Kyles information is not of use to you.

You want the Yoshimura pipe with a remap of your EFI. Yosh works directly with Hondas little bike team and I believe that gives them more insight into tuning the pipe, even to the stock motor, than anyone else. Yoshimura has free maps that you can view with their software and can give to whomever you pay to remap your EFI. They also have an inline module that lets you do it yourself.

Mapping EFI to the pipe (and fuel) is crucial to maximizing the money you spent on the pipe.
bw51
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bw51 12/3/2013 10:28pm
12/3/2013 10:28pm
mtl wrote:
Custom motor package will respond differently than a close to stock motor, therefor Kyles information is not of use to you. You want the Yoshimura pipe...
Custom motor package will respond differently than a close to stock motor, therefor Kyles information is not of use to you.

You want the Yoshimura pipe with a remap of your EFI. Yosh works directly with Hondas little bike team and I believe that gives them more insight into tuning the pipe, even to the stock motor, than anyone else. Yoshimura has free maps that you can view with their software and can give to whomever you pay to remap your EFI. They also have an inline module that lets you do it yourself.

Mapping EFI to the pipe (and fuel) is crucial to maximizing the money you spent on the pipe.
after some more reasearch i have to agree with you the yoshs are sounding like the pipe i need and would be riding with stock map for now... im looking at a Yoshimura RS-4D Pro Series its bottom end and midd range id like the gain im not bothered so much about top but dont want to lose any
Kyle978
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Kyle978 12/4/2013 4:13pm
12/4/2013 4:13pm Edited Date/Time 12/4/2013 4:15pm
mtl wrote:
Custom motor package will respond differently than a close to stock motor, therefor Kyles information is not of use to you. You want the Yoshimura pipe...
Custom motor package will respond differently than a close to stock motor, therefor Kyles information is not of use to you.

You want the Yoshimura pipe with a remap of your EFI. Yosh works directly with Hondas little bike team and I believe that gives them more insight into tuning the pipe, even to the stock motor, than anyone else. Yoshimura has free maps that you can view with their software and can give to whomever you pay to remap your EFI. They also have an inline module that lets you do it yourself.

Mapping EFI to the pipe (and fuel) is crucial to maximizing the money you spent on the pipe.
Maybe I worded it wrong, but we had motors done on 4 brand new 2013 CRF250R's, and were dyno tuning them. While on the dyno, we threw on all the different pipes, wrote a map for each pipe, and ran runs. 2 of the motors were full blown motors, 2 motors were partial mod that run on 91 pump gas. All 4 bikes are set up with an R&D throttle body and Vortex ignition for mapping.

So with that, I find my info relevant to the question.
bw51
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bw51 12/4/2013 4:21pm
12/4/2013 4:21pm
Thanks kyle all info is appriciated and helpful..
i have ordered the yoshi rs4 today after alot of reaserch last night... sounds a better pipe for the lower and mid range on Honda's ... think if was riding some nice long dry tracks you have in US id maybe have gone for the fmf but hopefully the yoshi suits what i need
Socket946
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Socket946 12/4/2013 4:53pm
12/4/2013 4:53pm
I believe it's MRD will build a pipe for what you want, exactly.

Hit up Eddie Sisneros for a remap..
Matej_Omahen 9/10/2015 8:29am
9/10/2015 8:29am
I have crf 250 2012 and i want to buy hgs pipe. What do you thing about this exhaust ? I want louder motor so if anyone have that pipe please tell me if is hgs louder than stock... Sorry for my english.

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