There’s a mechanical shift interlock that requires depressing brake pedal to shift gears. I’m currently fighting mine. Interlock would become stuck , requiring spray lubricant. Recently removed interlock but shifter is super loose and I’m afraid a rough ride would cause it to slip out of gear. Reinstalled and lubricated the interlock cable, also changed shift cable, kind of a pain to adjust cable but done. Yet to make an extended ride to report results.