Derock Linear Actuator Folding mechanism for automatic folding scooters Solax Smarti Genie + Brand new Genuine OEM Actuator for folding mobility scooter. This replaces the mechanism with model number YLSZ07-24-209/303-A-N 1999-Z070375-B0 1999-Z070375-D0 It is the older model scooter with stroke length of 94mm Please ensure this is the right part for your scooter. Any hesitation please message and ask