That`s what i was, and still am, struggling with my 1600+, what is the right exhaust to get the best out of it. Basic idea was that big motor needs big pipe, allowing to breath more. I used HMF big bird, which was excellent powerwise, but at that time i used the bike more on street and it was too loud, and i don`t like the noise that much. Later i bought used Ti-Force sumo which is also bigger than standard, at certain section. It was also great, very light and superb finish quality. This season i ran Murray big tube sidewinder and i got the power range higher with little more power, but along with other modifications, so, difficult to say how much benefit from the exhaust.
After trying these out i have to say i could have pulled nearly the same power with several other brands, not necessarily big tube or exhaust for big motor.
Brocks exhausts are certainly good design and gives top power, what i`ve seen live. I just like the longer, traditional design.
