So they eliminated the negative flow by pinching the header closed right at the first bend which improves the gas particle flow? Interesting...

Yes when you get your bike tuned please post the results. This has me quite intrigued, thanks.

 

I bought the Yoshi RS-5 and love it. It's really throaty and extremely light weight. The power gains are the usual 5 hp or so, but it helped throttle response and control the most.

 

yeah ill let ya kow , i hope i can do it in like 3 weeks . i was goingto buy a penkse that fell threw so now i think ima just re due my forks with wome nice valves and springs and try and get that tune. not sure where to go. the guy who did mine sold his race shop kept the dyno and now i cant get ahold of him. anyone know a tunning shop around cincinnati ? any how i have my old dyno sheets and ill def list my results when i get em.

whe i first got the vbike dynoes it had 106 that was with slip on. then i did filter v stacks gearing and got 109.7 andtons of tourqe, dont remeber exact and dont feel like getting up. ok so im thinking i should get 6 to 10hp. thats me being very optimistic at 10. but i also lost 20 pounds by gettig rid of that old exhaust .

 

[QUOTE=R Dub;1023822]Look how sexy the Akra looks as opposed to the 2 brothers or Yoshi. Now I am not knocking 2 bros or Yoshi because I think they make a great product. I just don't think it looks right on the 07-11 CBR 600RR. The Akra sits flush with the rear fairing where the 2 bros and Yoshi do not and I think the tip looks better but this is all my personal preference. As for performance wise you are going to get about the same from all 3 slip ons which is about 2 HP. 2 bros website says it is a 4.6 HP gain but they stay the stock one has 2 HP less than the other 2 websites.



I love the look on this one .. Go for thus one Broe . How much is the cheapest these go for and where can I get it from. Don't mean to thread jack!!!

 

These are not cheap. The cheapest I found is $630 from Moto Mummy. I have yet to hear 1 negative thing about it.

 

I went with the YOSh...just the slip on. I wish I would of waited and got the full exhaust system to get ride of the cat. converter. Below is a pic.

 

I am not sure which year your RR is, but I went with a Jardin RT-1. I had one on my F4 and loved the sound, so I stuck with it. I don't think it looks that bad.