If you tow with your Raptor or F-150, this airbag system is an absolute must. Suspension compression travel is retained all the way to the axle bump stop! Pneumatic components to manually fill and vent the bags are included (customer provides air source). Vent the airbags with the flip of a ball valve and they will aid the shock in bottoming control. Installation time is only 1-2 hours. No welding or bed removal required. This system is engineered for HUGE performance gains; there is nothing else like it on the market. All components are sourced and CNC fabricated in the USA. Contact us with any questions.