SURELOK features locking legs, known as the ride height lock assembly, that engage with the suspension beam to maintain ride height when the trailer is being loaded or unloaded. Since the trailer is rigidly supported by the locking legs, dock-walk is also eliminated when SURELOK is activated. Supports are automatically engaged when the trailer’s parking brakes are set. When the parking brake is released, SURELOK’s support legs automatically retract. No driver interaction is required. Available with a variety of air control options, SURELOK contributes to the maximum performance and productivity of your equipment.