Yoshimura RS12 Dyno Test! 22-23 CRF250R

We dyno test the full Yoshimura rs12 exhaust system vs stock on this CRF250R

Exhausts are often the first item bought for performane upgrades, but are they worth the money!?
Let's try and answer that in this video!

[jasonolmsted]

That’s a pretty good gain in power through out the power band on the yoshimura exhaust

[Jordan_MX]

Do you have to change the fuel mapping on these bikes when installing the full Yoshi exhaust? I just bought a 2023 250-R and want to swap out the exhaust but don't wanna mess anything up.

[ThePeteGray]

Good vid. Have you dyno'd the Pro Circuit system on this bike?

[adriangalvez]

Ive heard from you in other videos that these oem pipes are really good but like in this video the yoshi pipe was a bit better but wouldn't honda be able to find the last bit of power with an oem pipe and ecu tune from the factory?

[paulmarshall]

Hello, great video, I’ve just been watching a test of the 2025 Crf 250 vs the Works Edition (MXA) and they dyno’d both of them. They found the WE made slightly less power despite the Yosh and mapping to suit, I would value your opinion on the lower power?

[mason]

I got a crf 450. Do u think that you will have one of those coming through. Love the vids

[ThePeteGray]

Is the SS version a lot heavier than stock? Would you recommend the Ti system for this reason? Thanks.

[colbymullaney]

Which get ecu fits the 22.5 ktm 250 factory edition because looking on your website I didn't see any that specified that it fit it.

[bluestanley]

What sort of db are the yoshi pipes? Some tracks by me have noise limits

[shauncarrington]

Nice video..i think you meant 250R and not 250F but yes its written in the title of the video

[huntercampbell]

I got a 2023rx and I’m leaning towards fmfs factory 4.1 full system can you do a dyno on that exhaust

[ksupreme_]

What dyno tuner did you use? I got a 2023 crf 450 and can’t find a tuner for it

[theschultzs]

how much more horsepower did the yosh produce than stock

[SubaruRob]

Were these numbers taken with the baffle out?

[bpsfn]

was that a titanium or steel exhaust and pipe