EZ Einziehfahrwerk - 40 size (Paar) Irvine F-EZRT40 e mechanism that is very lightweight and suitable for contest use. A super thin profile design allows the units to fit into any application you might require. An easy and safe locking system is both reliable and smooth meaning each cycle is trouble free and a minimal drain on your onboard electrics. No bending is required for wheel fitting, each unit comes supplied with an adjustable axle.