The present invention describes a device for locking a lever of a motor vehicle. The device permits an operator to quickly lock the lever in an engaged position and unlock the lever from the engaged position. The device may be used even when the manual dexterity of the operator is limited by protective equipment. The device includes a pin and spring. The pin passes through aligned holes in the flange and lever. Releasing the lever exerts a lateral force on the pin, thereby preventing the pin from lifting from the lever hole and locking the lever in the engaged position. The spring lifts the pin from the locked position when the lateral force is reduced. The device may be used on a brake or clutch lever of a motorcycle, thereby permitting the operator to have at least one free hand at a stop.