Originally Posted by wrx_02
My buddy has a 650 and I have been on a 400 before, it was much much faster in top speed and acceleration.
The 650 he has will cruise at 100 all day and tops out at 120 or so. Well it hits an acceleration wall at 120. From 80-100 it will go fast enough to pass a car if needed.
Anywhere in the normal driving speed ranges the supermoto 400 will be faster. Its a 100lb lighter bike that is geared more aggressively. Actually I am pretty sure they are within 2-3whp of one another as well. The 650 is larger, but the 400 is a higher performance motor for its size, so the power output is a lot closer than you would think.
It won't matter with mine, I already have the 39mm FCR sitting here, a pipe on the way and cams won't be too far off. BB kit next year and I should be putting right around 50whp down on a 300lb bike. WAY more than enough for a supermoto. I can't think of any good reason to have more than that.