The M8 has a lot more low end torque than the 103 twin cam therefore i am able to shift into 6 about 50-55 riding solo and not lug the engine,when riding double its about 55-60,even after i did an air cleaner gutted cat,slip-ons and a power vision tune on my 16 Tri the motor didnt like 6th until about 2500-2700 rpm.