Abstract: A locking mechanism for a two-wheeled motorcycle having a center stand; the locking mechanism in one embodiment including a key lock with a cylinder that is connected to a cam that displaces a locking pin to engage a pivotal sleeve that connects the center stand to the frame of the motorcycle such that when the lock is engaged, the pin extends to an aligned hole on the center stand when the center stand is displaced to its operable position. When the center stand is locked, the motorcycle cannot be moved. An embodiment includes a bracket unit for securement to a leg of the stand, having a pivotal detent arm and a lock for locking the detent arm in a locked position.