Air Bags or Timbrens For 2018 Ford F-150 That is Sagging When Towing  

Question:

Expert Reply:

For your 2018 Ford F-150 that is sagging when towing, the best option between Timbrens and air bags to help with the sag, as well as help stabilize the truck, is definitely an air bag set up. The right fit for your '18 F-150 is going to depend on if you have 2WD or 4WD:

- 2WD: Air Lift LoadLifter 5000 Air Helper Springs # AL57268

- 4WD: Air Lift LoadLifter 5000 Air Helper Springs # AL57385

Air bags are going to be the better overall route than Timbrens as they will enable a much better ride overall. Timbrens work well, but can give you a harsh ride, particularly if then engage frequently, which will seemingly be the case with your camper shell/topper and the large amount of sag you are experiencing.

The air bags, on the other hand, not only won't have that issue, but they allow you to customize the amount of support you need. So with the topper on and a bit of sag you can engage the air bags to a specific psi, and when you are towing, you can set a different psi to give you the best support at all times. Being able to get the precise amount of suspension enhancement you need will enable you to get the best possible ride with your F-150.

During the installation of these air bags, you are going to want to ensure your air lines are cut perfectly straight, and the best way to do this is by using the Air Hose Cutter # AL10530, and since you mentioned you had a 2 inch leveling kit you will want the Air Lift Universal Air Spring Spacers for LoadLifter 5000 and 7500XL - 2" Lift # AL52420.

Finally, I do recommend considering a compressor, as it will simplify inflating as well as maintaining your air bags, the Air Lift WirelessAIR Compressor System # AL58WQ.

expert reply by: Kyle S

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