If you decide to buy this exhaust, be fore-warned that you will need replacement gaskets for the headers. Yoshimura doesn't include them with the slip on. You will also seriously consider removing the stock exhaust like the instructions say to before cutting it to ensure you don't hit your swing arm, foot peg, or rear wheel if you use a hack saw or reciprocating saw. You can cut it with out removal but be sure to put a towel over your rim and swing arm first. I would have rated a 5 if the gaskets were included but because they weren't, I didn't remove the stock headers. This ehaust looks and sounds great!