Spinning roller coasters (or 4th dimension roller coasters, as they are known to Arrow Dynamics) are similar to flying roller coasters in many ways, the key differences being seat position and rotation. Rather than being suspended beneath the track, riders are placed to either side of the track, in seats mounted on spinning arms similar to axles. The arms do not spin freely, but rather rotate to a certain position at a predetermined point during the ride.

Currently, the only operational spinning roller coaster on Earth is X at Six Flags Magic Mountain in Valencia, California.