i think i redline at 10 1/2 and it will go to 12 1/2 or 13?? i forgot?? and it is cold in the garodge so i will make sure about it tomarow :lol: but it is smooth all the way around except for when you release then get on the throttle again it is kinda jumpie.....idk if its normal but that how it is for me!?zx636r said:inline 4 sounds nice crusing around at 5k. what is the rpm range on an average twin motor like a ducati or sv. i rode a zx500 a couple of time but i dont remember how high it would go.