The 750 triple Kaw was 12.28 1/4 mile speed,faster than the 903 Z1,be it only by a fraction.And faster than this HD.I should mention I was looking at bikes of the 70's.But if this HD is from 87 it still hadn't caught the Kaw.Biggest disadvantage of the Kaw,as mentioned,was that it was only good for straight lines.I know later bikes in the 80's and after did go quicker.The thing that blew my mind was that right out of the showroom,with no add ons or additional work,the Kaw could crack near 12 seconds.