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Best Suspension Enhancement for 2018 Ford F-150 For Sag and Stability When Towing

Question:

I have a 2018 Ford F150 and a tow a 25 foot airstream travel trailer. I’m looking to address rear truck sag 2-3” and improve stability. I am weighing the options of an airlift 5000 suspension kit or a roadmaster RAS spring kit. I understand the pressure changes Required in Airlift option between tow/non-tow bs RAS. Which would you go with? If springs, standard or HD? If airlift with/without jounce bumpers. Read some negative reviews re unloaded harshness w integrated jounce bumpers. Thx for any advice

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Expert Reply:

The best option for suspension enhancement for your 2018 Ford F-150 to help with both sag and stability is definitely the RoadActive Suspension kit over air bags, and there are a number of reasons for that.

The reason is the RoadActive Suspension is capable of enhancing your F-150's ride in more ways than air bags while being easier to install and maintain. While both will help with squat, and give you more stability when towing, the RAS will also help your truck with any swaying that occurs, stop wheel hop (which happens when your wheels aren't making full contact with the ground and there is some vibration), greatly reduce body roll, and improve your overall handling. These are things air bags can't do at all or as well, and are also much more difficult to maintain unless you have a pricy compressor such as the Air Lift WirelessAIR Compressor System # AL74000EZ.

The RAS works because it is an active system which continually reinforces your original leaf spring suspension. The force normally put on your F-150's current leaf springs, either when carrying cargo or when making a tight turn, gets transferred to the RAS Enhancement Kit, allowing your leaf springs to work normally.

The correct RoadActive Suspension will depend on if your 2018 Ford F-150 is 2-wheel drive or 4-wheel drive, and you will want to go with the Heavy Duty if your truck sags any more than 3 inches. I know you mentioned 2 inches to 3 inches but I did want to be sure to at least give you the option in case it were more.

- 2-Wheel Drive: RoadActive Suspension Custom Leaf Spring Enhancement Kit - Standard Duty # RAS3611-B or Heavy Duty # RAS94FR

- 4-Wheel Drive: RoadActive Suspension Custom Leaf Spring Enhancement Kit - Standard Duty # RAS3611-Y or Heavy Duty # RAS3611-YHD

I have added links below to some video reviews for you to check out as well if you'd like.

expert reply by:
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Kyle S

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