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Yoshimura RS-9D Complete Exhaust With Stainless Header - Dual
Yoshimura RS-9D Complete Exhaust With Stainless Header - Dual

$824.99 - $1325.25
5% Off - Save up to $69.75

Item #YSH003J

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5 Reviews
4.6 out of 5 stars
5 Star   4 4 Star   0 3 Star   1 2 Star   0 1 Star   0
All Reviews
Over 6 months ago
Looks amazing sounds great!!

Thanks Motorsports!! Long time customer of Motorsports!!! Once again fast shipping and the new exhaust is awesome!!

Over 3 years ago DURYEA


Skerg Verified Purchaser Top 250
Over 3 years ago Colorado
Great product

Great fit and easy install.

450honder Verified Purchaser
Over 3 years ago

Sounds good goes on easy and adds that little low end snap.

Dirtbike88 Verified Purchaser
Over 4 years ago
Why 3 stars? upkeep is why.

Don't get me wrong here i absolutely love this exhaust and it has a huge boost in power, like crazy power. BUT the company says this "every 6-8 hours of ride time you must re-pack the exhaust" so i am like ok no biggy right? well i looked it up and the price is a $100 per re-packing.... and that is really costly if you follow their rules and re-pack after each moto or after every 6 hours of ride time which is why i give it 3 stars or else it would have 5 stars. It does improve the bikes power and it makes it sound alot better but i absolutely dislike the cost of upkeep and say what you will about me being a cheepo but that's too much cost for repacking and upkeeping on it.... other than that i highly suggest getting the exhaust!

8 Questions
Answered:   6
Not Yet:   2
Q:  What is the decibel level of this exhaust with the spark arrester in and what is it with the sparker arrester out?
2 months 12 days ago
Top 10
2 months 12 days ago
A: I'm sorry for the error on our website. I confirmed with Yoshimura that the RS-9D Complete Dual Exhaust With Stainless Header comes with the AMA Pro Sound Inserts installed and included at no extra charge.
Because there are too many variables outside of the control of the manufacturer, Yoshimura does not offer any statement or claim regarding the decibel (dB) rating.
With the AMA Pro Sound Inserts installed, the system maintains the AMA Regulation sound levels. An additional spark arrestor reduces noise only slightly.
Q: Do you have spark arrestor inserts for this exhaust
2 years 6 months ago
Q: Is there a spark arrestor that will fit the Yoshi RS-9D?
2 years 6 months ago
Top 100 Contributor
2 years 6 months ago
A: Yoshimura only makes a low volume non spark arrested insert for the rs-9D for the hondas
Q: Does the 2015 crf450 yoshimura RS-9D full exhaust fit on the 2017 model??
2 years 8 months ago
Q: Is there anyway I can fit these ones on a CRF250 2007?
Over 4 years ago
MotoSport Staff Expert
Over 4 years ago
A: No unfortunately it is not available for your 2007 Honda CRF250R.
Q: Will remapping need to be changed?
Over 4 years ago
I have a 2014 crf250r and I was wondering if I would have to remap my bike If I got this full system?
Over 4 years ago
A: I have a 2014 honda crf 250r and i got the full system and titanium with carb ends and i have not remapped my bike and it works fine
Top 10
Over 4 years ago
A: Normally when installing a slip-on only minor changes to the air/fuel ratio are needed, if any at all. If your bike is currently running properly, likely you will not have to make any changes after installing this slip-on. I would recommend installing the exhaust and riding the machine to see how it is running then decide if you need an purchase an aftermarket EFI tuner .
Top 1000
Q: Will mapping need to be changed when adding this exhaust system?
Over 6 years ago
MotoSport Staff
Over 6 years ago
A: You will want to remap after installing the exhaust on the 2013 CRf450r. Even without installing an exhaust the CRF450r can benefit greatly from a tune. You have options of purchasing a piggyback tuner such as a Power Commander or you can even send out your stock ecu to a performance company for re-mapping.
Q: Replacement
Over 6 years ago
hi, I want to khown if you have a replacmenet for the left side of carbon fiber for the yoshimura rs9
MotoSport Staff
Over 6 years ago
A: Unfortunately we don't have these end caps available as a replacement part. You would want to get in contact with Yoshimura directly at this time.

See all bikes that this part fits...

See Fitments
# Part Numbers
Product Variant Manufacturer Part #
Signature / Stainless Steel/Aluminum 225810H320
Signature / Stainless Steel/Aluminum 228420H320
Signature / Titanium With Carbon Fiber End Cap 228421H720
Signature / Stainless Steel/Aluminum 225820H320
California Proposition 65

WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. For more information, go to