Yoshimura vs Motoworks

mxrider28
Edited Date/Time 3/31/2013 8:32pm
For a mx raced 2012 crf250r which pipe would be better. Im trying to not spend to much money. The yoshi rs4 slip on is $280. Or the motoworks full system is $342 or just the motoworks slip on for $225. My stock slip on is falling apart so thats why I would like to get one. Just not sure what is the best deal and if one exhaust will make more power than another. Thanks
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RACESTHILAIRE 3/21/2013 2:04pm
3/21/2013 2:04pm
I've never used a motoworks system, but I can say we have used many yosh systems...and honda 250f and 450's always seem to have the most noticeable gains.

I would try to do the full rs-4 system on your bike. I can sell you one at a killer deal if you'd like. Email me @ sthilairemx@metrocast.net
526
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526 3/22/2013 10:27am
3/22/2013 10:27am
If you dont plan to change the map i would find a stock replacement. Just changing the pipe will probably make the bike run worse.
RACESTHILAIRE 3/22/2013 10:32am
3/22/2013 10:32am
^^^ Not true. There are gains to be had on the crf250 without remapping it. Obviously remapping will take things to another level.
526
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526 3/25/2013 6:42am
3/25/2013 6:42am
These bikes are so Lean from the factory and putting a free flowing exhaust only makes them leaner(run hot wear quicker). It is funny how when you put an exhaust system on 10yrs ago and jets were $10 everyone did it now that it cost $100 - $600 no one thinks they need it?

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slipdog
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slipdog 3/25/2013 7:23am
3/25/2013 7:23am
The '13 CRF 250 is significantly rich across the board with stock mapping
mxrider28 3/25/2013 9:06am
3/25/2013 9:06am
What will make more power the yoshi slip on or the motoworks full system?
enginedr
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enginedr 3/31/2013 6:35am
3/31/2013 6:35am
had great result on the yoshis , still hitting 39 to 40 horses on a stock pipe 2013 crf 250 on pump gas though with just new cam n springs. no mapping required , but might find a hair more when mapping leaner above 7000 rpm @ wot.
mxrider28 3/31/2013 7:36am
3/31/2013 7:36am
enginedr wrote:
had great result on the yoshis , still hitting 39 to 40 horses on a stock pipe 2013 crf 250 on pump gas though with just...
had great result on the yoshis , still hitting 39 to 40 horses on a stock pipe 2013 crf 250 on pump gas though with just new cam n springs. no mapping required , but might find a hair more when mapping leaner above 7000 rpm @ wot.
I decidned to get the yoshi slip on. Did your remove the spark arrestor? What about the ring? How hard is it to do? Thanks
enginedr
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enginedr 3/31/2013 8:32pm
3/31/2013 8:32pm Edited Date/Time 3/31/2013 8:33pm
they seem to run best with spark arrest in , just like they ship it runs the best normally.

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