This is because They can be equipped with supplemental steps for safety Because the heavier the scooter, the upper the speed, and for that reason, the increased the need for more Sophisticated safety options like twin stem locking mechanisms. Oh and this is the listing for adult folding electric scooters https://socialfactories.com/story4962006/the-best-side-of-scorpius-a-electric-scooter-cheap-prices