Not wanting to start a 4 stroke discussion, but why's that? We tested 40, 45 and 50 on the brake and the bigger the hole the more the mojo.

Oh yeah, more noise too, but my answer to that is wear earplugs!

On the 18 pipes, just hang in there. It would seem that there's a rebellion from the RGV250 owners. they're tired of being left for dead by TYGA'd NSR's and want some of the action.....apparently.