An amusement ride such as a roller coaster, more in particular to booster drives mounted on a track of such a ride, are disclosed. The booster drives each include at least one booster drive motor for driving booster wheels, and for engaging a drive fin of a passenger vehicle to propel that vehicle along the track. The booster drive further includes a base mounted to the track structure, a frame that supports the at least one booster drive motor and the two booster wheels, and a mobile carrier that connects the frame to the base via a left and a right carrier arm. These carrier arms are non-flexible arms pivotably connected to the base and the frame or they are flexible arms, such that in use they enable movement of the frame relative to the base. A biasing device resiliently forces the frame towards a predetermined position.