 The suspension systems of stand-up scooters range from simplistic spring based fork systems to the complicated, dampened cam-link and C.I.D.L.I suspension mechanisms or a hybrid combination of wooden deck, coil spring, and dampers.Brake systems of kick scooters can range from Disc Brake system, magnetic brake (used for energy consumption), or the less efficient Hydraulic Brakes, where brakes can be placed on either -or both- the front and back wheel(s).Many newer models of e-scooter also have Kinetic Energy Regeneration System (KERS), which also acts as an E-ABS on many models.