Tweetall the new 600's have about 110-125 hp from the crank so to the rear tire your looking at 95-105 and quater mile times in the mid tens, the liter bike post quater mile time in the high 9's so there isnt that much difference... most of it is in the rider. i can spank my guys who have 750's and 1ks becuase i can ride better.