It is then lowered back down to the station where the next riders board the train. The XT 150 has the option of sending riders around a second cycle at the operator's discretion. When the train stops on the lift hill at the end of the ride, instead of lowering slowly back to the station, the chain will raise the car up and send it through the ride again. SkyLoop XT 450 is a roller coaster that reaches a maximum height of (the actual track reaches ) and a top speed of . This model is an extension of the XT 150, and the beginning track is of the same design. The XT 450 has 4 inversions and also uses a train made up of 2 X-Cars that seat 6 people each. The roller coaster begins the same way that the XT 150 model does. After the train departs from the station, it immediately begins to climb the vertical (90 degree) lift hill. Upon reaching the top of the lift, the train turns 45 degrees backwards putting the train and its riders in an upside down position. After, as the train exits the lift, it goes through a heartline roll. The train enters the first drop where it reaches its maximum speed of before traversing a tight left overbanked turn. After the turn, the train goes over the only camelback hill followed by another left overbanked turn. The train then follows a flat section of track before going down a small drop leading into the station and back up the lift where the train stops. The train is then lowered back down to the station where the next riders board the ride. SkyLoop XT 900 is a concept that has yet to be built . The design of model begins the same way as the XT 150 does as the lift, first inversion, and first drop are all present in both models. Along with the elements from the XT 150 model, the XT 900 includes a series of turns, overbanked turns, a loop, and a cobra roll. SkyLoop Custom is a concept that also has yet to be built . The design of this model is based on the SkyLoop XT 150 with an extension of what the particular amusement park wants. Roller coasters of this model can vary from one another. SkyLoop Launch is a concept that has also yet to be built . This design can be incorporated with the XT 150, 450, 900, and Custom models as the "launch" takes place where the normal lift would be. The top speed of the launch would be and is driven by linear synchronous motors (LSM).