Yoshi R77's versus Akrapovic 4-2-1

[Steve]

Thanks Steve for the input.I'm looking into the pros and cons at the moment,I'm trying to stick with a 4 into 2 system but not necessary original.
I was checking performance charts on their charts and thought Akropovic was only slightly better
yours running at 181 is better than their results.Did you change your headers?

nah mate only the cans and a k & n air filter, Petes bike has a full Yoshi system on it and from memory it is just under the 200 mark. Another mod I did was change the front sprocket for more acceleration, I did have to fit a speedo healer but it certainly made a difference to the bike and all up cost about $200.