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

$1255.50 - $1345.99
10% Off - Save up to $149.01

Item #YSH003I

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5 Questions
Answered:   4
Not Yet:   1
Q: Need to remap?
3 months 13 days ago
On a 2014 crf450, will I need to have it remapped? Or will it be okay to run on the stock map?
Top 250 Contributor
3 months 13 days ago
A: You do not need to remap unless modifications have been made to the intake system
Q: Not fully carbon, still no spark arrestor?
1 year 6 months ago
I have the aluminum / carbon tipped system. Even not being the fully carbon fiber type you still can't insert spark arrestors. That seems a mistake by Yoshimura, looks like business has to go to FMF then.
Q: Will I need to remap?
2 years 11 months ago
I have a 2014 crf250, will I need to remap if I install the full yoshi system?
MotoSport Staff Expert
2 years 11 months ago
A: Generally when installing a full system you will need to re-program.
Q: Does this come with a forest approved insert. thanks
Over 4 years ago
MotoSport Staff Expert
Over 4 years ago
A: No, The Yoshimura RS-9D Exhaust Systems are intended for closed course use only, there is not a spark arrestor insert made for this exhaust. Actually most full carbon can's are not going to be Forest Service approved due to the fact that running a spark arrestor in a full carbon can is not recommended. When you run a spark arrestor in a full carbon fiber muffer the heat tends to build up and burn up the packing quickly. I would recommend looking at the FMF Factory 4.1 RCT Dual Exhaust with the Megabomb Header. The FMF exhaust would come with a Forrest Service Approved Spark Arrestor Insert.
Q: Are you able to run a spark arrestor?
Over 4 years ago
Expert MotoSport Staff
Over 4 years ago
A: There is not a Spark Arrestor insert that would work for this exhaust. Actually Yoshimura does not recommend that you run a spark arrestor in full carbon fiber cans as it decreases the packing life significantly which will also decrease the life of the Carbon Fiber. If you are looking to run a spark arrestor I would recommend looking for an exhaust that is constructed of titanium or aluminum.
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# Part Numbers
Product Variant Manufacturer Part #
Signature / Carbon Fiber 225811H220
Signature / Titanium 225811H720
Signature / Titanium N/A
Signature / Carbon Fiber 225821H220
Signature / Titanium 225821H720
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