I currently have a 2005 RKC bike, stage 1 ,full true dual exhaust,, v&h fuel pac, TC88 MOTOR my Buddys has a 2010 SG with , stage 1, 2 into 1 v&h highout slipon, with 96" motor he wanted to see what $450.00 worth of add-ons done for his bike that was what stage 1 cost, ecm download and SE airfilter. we were rolling start 1st gear ,,we made rule no fast that 90 mph on long strip of road, we started the same time and at 90Mph he was 2 full bike lengths ahead of me, so thats a close comparison of the 2 motors. both modded. maybe this will help others if your wondering about the motor difference. p.s there were no missed gears or half throttles, it was all out! i forgot, i also have a leather tourpac, which weighs around 50 lbs, loaded which it has all my leather in it.