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Honda CBR250R Gets Street Sport Exhausts from Yoshimura.Honda CBR250R Gets Street Sport Exhausts from Yoshimura - autoevolution
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Just few questions, can some experts help me understand pls?
1. What's the spring kind of stuff found on the last image? What's the purpose?
2. And what does "With dB-Killer fitted: 86 dB @ 4,250 rpm" really mean? My understanding on FFE/AM exhaust goes that, at any point in time or at maximum RPM, XX is the amount of decibel that can be heard. So, if this one says 86dB at 4250 RPM, then wouldn't it exceed the 91dB limit imposed by Govt at even higher RPMs? Pls help understand.
Damn expensive!!! Should cost atleast 40K or above isn't it? Any idea on the output performance? Anyone pls?Skill is what keeps you on a Motorcycle
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Of course, it might exceed 91 db. That's why it doesn't come as stock on a CBR. It's like "keep the stock exhaust, or keep the revs low".Originally posted by aargee View Post
In India, anything goes but abroad you must use these on racetracks only, or maybe in some areas, keep the revs low...
Db killer, as Joel explained earlier, will not make your exhaust comparable to the stock exhaust. It will kill db slightly.
Can't say about performance, but in looks, this exhaust looks much better than the Stock exhaust.Last edited by Samarth 619; 06-20-2011, 10:01 PM.---
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Is there a power gain from using these after market exhausts? I guess so, just want to be clear in my head.
Also are these complaint with the emission norms since I have seen some do away with the catalytic converters. (Not so sure about these)Hero Honda Karizma ZMR
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^^ ideally they are not, thats why they are restricted for track use only. A cat - con saps a lot of the exhaust gas thrust, creating a back pressure. These FFEs minimize the back pressure, improving the power output and the rev-ability of the engine.
@aargee - those springs are generally to hold the end can in place, and reduce vibrations. Also for quick swapping/changing
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May I know what the things in bold mean180-420-5V50180-420-5V80 180-420-5V20 180-420-5W50 180-420-5W80 180-420-5W20
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Hi
I m planning to install the Yoshi exhaust on my CBR.
Had a couple of queries.
1. Do we need to alter the standard pipe to install this slip-on?
2. Also I have completed 4000kms on my bike. Is there any Km limit after which we need to install the exhaust. For Eg, once the bike has completed 5000km or 10000km?
3. Would there be any effect on the engine ie. since its generating the extra power, would it be affecting the engine in the long run?Safety First ( protective gear)speed next :PComment
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Said, couple of questions yet asking 3 of themOriginally posted by rajmadhawk View Post
Don't think so, anyway, let me leave it to experts for commentsOriginally posted by rajmadhawk View Post
Once the mobike is yoursOriginally posted by rajmadhawk View Post
I think its negligible, not sure though.Originally posted by rajmadhawk View Post
Thanks JD
Skill is what keeps you on a Motorcycle
Awareness + Skill is what keeps you out of harm's way
ATGATT + Awareness + Skill means you might Live To Ride another dayComment
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Thanks a lot mateOriginally posted by aargee View PostSaid, couple of questions yet asking 3 of them
Don't think so, anyway, let me leave it to experts for comments
Once the mobike is yours
I think its negligible, not sure though.
Thanks JD
Safety First ( protective gear)speed next :PComment
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well i read in few website that these exhaust don't do much it's the weight that give you extra power. as the stock one are heaver then these... and if you reduce the weight then normally performance will increase...No road is enough... No destination I search...
1999 - ......... CBZ Classic (Owned)
2011 - ......... CBR 250 R AB(Owned)
2013 - ......... KTM Duke 390 (Owned)
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