Originally Posted by Pleiades

There's nothing wrong with the Akrapovic system as such; it's titanium (cans), very well made, looks sweet, is a good design in terms of gas flow with proper Y-pipe and equal bore link pipes (unlike the similar looking Leo Vince) and it sounds great. They are expensive to buy as a standalone accessory, but if you barter with the dealer when you buy a brand new bike, they can be had very cheaply - which is what I did. I have to say I wouldn't have given them a second glance at the full asking price!

I changed it (them) for a few reasons: (1) They still have cats. (2) They're only 1Kg lighter than the stock system. (3) I wanted a single can so I could fit a tool tube. (4) I got bored after 4 years and fancied a change!