Having optimum pedal gear ratios and the willingness to pedal
will greatly enhance the riding experience on these!
Gear cluster and 50+T crank sprocket, keep pedaling at 28
As for shift kits, setting a shift kit up so that you can contribute your pedal power at the optimum time is the way to go. By default, the shift-kit puts your "pedal" redline way below the HP peak. To counter that you must run a huge (60+) outer crank sprocket to increase the engine gear reduction.