Jon,i've had quickshifters on 3 bikes now,1 Ducati,& 2 R1's,& i've gotta say,i personally have had no problem with gearboxes of any kind !,and like a slipper,once you've had one,wouldn't be without one,they're an awesome piece of kit !,i've currentley got the latest translogicd gp sensor type fitted,but not plugged into the pc111,but it's the same type,as translogic make them for dynojet,they advised me to go with a stand alone unit,as to get the best out of each unit !,get one bought !