If you tow with your Raptor or F-150, this airbag system is an absolute MUST. With the spacer removed, suspension compression travel is retained all the way through the axle bump stop without bag interference. Pneumatic components to manually fill and vent the bags are included (customer provides air source). Vent the airbags with the quick flip of a ball valve. We have meticulously engineered this kit such that welding or bed removal is not required! There is simply no other bag kit on the market that even comes close to this versatile performance this one offers. Equipped with a cross member to ensure rigidity and curtail the frame deformation you would see from our "competitors." Our components are all CNC fabricated from the highest quality billet 6061-T6 aluminum and Delrin Acetal material in the USA. Please contact us with any questions you may have.