Shorty GP exhaust - 600RR.net
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post #1 of 17 (permalink) Old 11-27-2015, 06:38 PM Thread Starter
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Shorty GP exhaust

Hello everyone,

I have an 04 CBR600rr and wanted to go with a shorty side exhaust....

https://www.radiantcycles.com/produc...0rr-shorty-gp/



I also wanted to go with aftermarket headers but was wondering if anyone knows of any that I wouldn't have to cut. I do also have a power commander so I can retune it after I get everything done. And yes I know this is going to be super annoyingly loud and everyone will hate me but I don't really care

Any tips would be greatly appreciated!

Thanks!
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post #2 of 17 (permalink) Old 11-27-2015, 06:50 PM
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Don't do that.
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post #3 of 17 (permalink) Old 11-27-2015, 07:33 PM Thread Starter
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How come? Not trying to be a smart ass or anything... I'm genuinely curious.
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post #4 of 17 (permalink) Old 11-27-2015, 11:01 PM
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"This exhaust provides ample sound at 95 decibels per 8000 rpm."

Is that even legal where you are? Cruisers are loud enough, just get a decent slip on and be happy.

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I'd rather be next to a rider that can maintain a controlled wheelie than a muppet on their phone.

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post #5 of 17 (permalink) Old 11-27-2015, 11:14 PM
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First things first. Take your exhaust off (just the midpipe) ride around for about a week.

If you honestly like it for a week, then go for it it's your bike you're gonna do what you want. I've straight piped my bike. I loved it for about a day. But the power loss and the extreme loudness becomes extremely annoying.

Maybe consider getting like an r6 exhaust can and do something custom? Maybe an M4 exhaust or something.
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post #6 of 17 (permalink) Old 11-27-2015, 11:51 PM
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If you're going to do a side exit it's worth spending a lot of time and effort to get the right parts and think about what you actually want. With a proper custom map and the right diameter parts, you can gain power over the under tail but only at top rpm and at the expense of rideability. I think the CBR looks great with a side exit but they can look awful if done with cheap and crappy eBay bits! Oh and there's no way that pipe you're showing is 95dB, it'll be way louder than that!

Be aware though that unless you use a proper silencer (like an Akra from an R6, ZX6R etc.) then it's going to be LOUD. My Austin Racing is brutal and while I've never been pulled over with it, its ear piercingly loud. Makes a TOCE or Two Brothers sound like a 50cc hairdryer! My full race Leo Vince was 118dB and the AR is in a different league!😂 here's my setup:





Here are a couple of videos of mine to give an idea of how a short side exit sounds on the CBR, but no video comes close to doing justice to just how loud and brutal they sound:





Have fun with whatever you decide to go with.



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post #7 of 17 (permalink) Old 11-28-2015, 12:04 AM
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Quote:
Originally Posted by Parkerr View Post
Maybe consider getting like an r6 exhaust can and do something custom? Maybe an M4 exhaust or something.
Or if they want loud, lack of power... a cruiser?

Ride carefully - You are invisible.
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I'd rather be next to a rider that can maintain a controlled wheelie than a muppet on their phone.

Current: 2012 Street Triple R
Sold: 2001 NSR150SP | 2012 CBR250R
RIP: 2003 CBR600RR

DIY:
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post #8 of 17 (permalink) Old 11-28-2015, 12:11 AM
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Buckly's an 07+ model so mine would make things easier since mine is an 05 :)

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post #9 of 17 (permalink) Old 11-28-2015, 06:39 AM Thread Starter
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Buckley... I just spent HOURS looking at your build thread... that's an absolutely AMAZING job on that bike... I can't believe how much you've done to it.... It's beautiful... I'm so jealous! It's given me a bunch of ideas though.
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post #10 of 17 (permalink) Old 11-28-2015, 12:20 PM
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Quote:
Originally Posted by JRS83 View Post
Buckley... I just spent HOURS looking at your build thread... that's an absolutely AMAZING job on that bike... I can't believe how much you've done to it.... It's beautiful... I'm so jealous! It's given me a bunch of ideas though.

Cheers mate, it's a work in progress and there's a lot more left to go on it but I'm happy with it so far!

Good luck with what you decide to do, if you've got any questions then do PM me and I'll do my best to help if I can!



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You only go as fast as you twist the throttle.

My build thread: https://www.600rr.net/vb/showthread.php?t=302170

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post #11 of 17 (permalink) Old 11-29-2015, 01:13 AM
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Quote:
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How come? Not trying to be a smart ass or anything... I'm genuinely curious.
Well for one... the longer pipe gives the CBR its great mid-range, the engine is tuned for the pipe length, etc.

Honda had to do additional work on the 1000 to re-gain the mid-range they lost when they ditched the under-tail pipe.

2007 Honda CBR600RR: Akrapovic slip-on, HEL braided lines, ASV shorties
2009 Honda CBR1000RR Repsol: Sato rear-sets, Taylormade slip-on, Pazzo Shorties
1996 Suzuki RGV 250 - Arrow pipes
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post #12 of 17 (permalink) Old 11-29-2015, 03:21 AM
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Quote:
Originally Posted by Buckley.S View Post
My full race Leo Vince was 118dB and the AR is in a different league!😂 here's my setup:
That is INSANELY loud. Do they even make ear plugs with a NRR rating high enough to dull that out?

Ride carefully - You are invisible.
FB | YT

I'd rather be next to a rider that can maintain a controlled wheelie than a muppet on their phone.

Current: 2012 Street Triple R
Sold: 2001 NSR150SP | 2012 CBR250R
RIP: 2003 CBR600RR

DIY:
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post #13 of 17 (permalink) Old 11-29-2015, 10:06 AM
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Quote:
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Well for one... the longer pipe gives the CBR its great mid-range, the engine is tuned for the pipe length, etc.

That's s very good point, the undertook exhaust is what give the CBR it's great everyday rideability. Shorter pipes move the power band up in the rev range at the expense of mid range performance. That's why the CBR has the lowest power output of most modern super sport bikes, but why the big number bikes like the R6 and ZX6 aren't as road useable.

Whatever exhaust changes you make, a proper custom map is essential. Make sure you've got a PCV or equivalent fitted and remember that a good tuner will make or break those sort of modifications.



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You only go as fast as you twist the throttle.

My build thread: https://www.600rr.net/vb/showthread.php?t=302170

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post #14 of 17 (permalink) Old 11-29-2015, 10:07 AM
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Quote:
Originally Posted by Juzman View Post
That is INSANELY loud. Do they even make ear plugs with a NRR rating high enough to dull that out?

Haha it's pretty loud!😂 I use earplugs from ultimate ear and they're very good. Ive got a higher dB rates set just for riding the CBR and even after a whole day of riding it's not really an issue.


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You only go as fast as you twist the throttle.

My build thread: https://www.600rr.net/vb/showthread.php?t=302170

www.carbon-hut.co.uk
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post #15 of 17 (permalink) Old 12-01-2015, 09:03 AM
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Buckly's an 07+ model so mine would make things easier since mine is an 05 :)

Daym! Nice!
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post #16 of 17 (permalink) Old 12-12-2015, 10:32 PM Thread Starter
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So I've decided to go crazy and get an Akrapovic Evo full system. Hopefully that makes enough noise for me :)
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post #17 of 17 (permalink) Old 12-13-2015, 10:51 AM
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