Description: This Pacbrake ALPHA XD PRO rear air suspension kit is a game - changer for 2004 - 2008 Ford F - 150 2WD/4WD trucks (note: won't fit the FX2). Tired of truck sag, sway and bottoming out? Say goodbye to these issues! These air bags/air helper springs with Jounce Bumpers come with 1 - inch thick corrosion - resistant end caps and 20 support wires, offering ultimate strength and durability. The kit features a bouncy polyurethane bumper in the bag to prevent damages from bottoming out. It's perfect for those who want an internal bumper and a comfortable ride without air when not towing. Customers can choose between a kit with or without an in - bag bump stop. The bump stop acts as an 'insurance policy' against bottoming out due to rare air bag pressure loss. You can also run these air bags at 0 psi when unloaded for better comfort. For those who need max travel, the HP10004 ALPHA HD air bag without bump stops is recommended. Part Number: HP10004 - J. Features: 5,000 lbs of load - leveling capacity, 2 - hour install time, lifetime warranty, and can be run at 0 psi. Click Here for installation details.

Using this air suspension kit is easy. First, make sure your truck is a 2004 - 2008 Ford F - 150 2WD/4WD (it won't fit the FX2). Installation should take about 2 hours. If you choose the kit with the bump stop, it will give you peace of mind against bottoming out. You can run the air bags at 0 psi when your truck is unloaded for a more comfortable ride. When towing heavy loads, adjust the air pressure according to your needs. Remember, if you need maximum travel for tasks like picking up trailers or going off - road, you might want to consider the version without the bump stop. For maintenance, regularly check the air bags for any signs of wear, especially the corrosion - resistant end caps and the support wires. Keep the air bags clean and make sure there are no leaks. If you have any questions, feel free to contact us.