Recommended Rear Suspension Enhancement For 2021 GMC Sierra 1500 AT4

Question

Question:

Will be towing a 6500 lb travel trailer...which Timbren SES should I order for my truck?

asked by: Chris

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Expert Reply:

The correct Timbren Rear Suspension Enhancement for your 2021 GMC Sierra 1500 AT4 is the Timbren Rear Suspension Enhancement System # TGMRCK15S you were looking at which has an 8600lb load rating, but I have a different option for you.

I recommend going with the SumoSprings Solo Custom Helper Springs - Rear Axle # SS45FR which have a load rating of 1500lbs which is plenty for your 6500lb travel trailer since the only weight that gets put on the rear suspension of your truck is the tongue weight of the trailer. This option will not affect the unloaded ride quality of your Sierra, where the Timbren option is known for causing a stiff unloaded ride due to being so much stiffer.

I included videos for both of the products mentioned for you to take a look at.

expert reply by: Samuel C

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Answer 1

The correct Timbren Rear Suspension Enhancement System for a 2021 GMC Sierra 1500 with AT4 is part #TGMRCK15S. This is a complete kit that comes with everything you need and is a confirmed fit from the manufacturer for AT4 models.

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Answer 2

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the…

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Answer 3

Hey Dustin, thanks for reaching out! I will recommend SumoSprings over Timbrens all day everyday because they are much more forgiving when the vehicle is unloaded. We've actually joked around here about how the Timbren kits will either give…

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Answer 4

Thanks for the picture! For your 2023 GMC Sierra 1500 with adaptive ride control you'll want the Air Lift LoadLifter 5000 Air Helper Springs item #AL57388. This air bags have a 5,000 lbs load leveling capacity that will keep the rear end of your…

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Answer 5

The Firestone Ride-Rite Air Helper Springs #F2609 is the only kit that we have that will fit your 2020 GMC Sierra 1500 Denali with the adaptive ride control. These have a 5,000lb capacity to enhance your factory suspension under load. This will not…

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Answer 6

Yes, it will! To attach the Thule Caprock Platform Roof Tray item #TH58YE to the roof of your 2024 Subaru Forester Wilderness you will need the Evo Raised Rail Feet item #TH710401.

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Answer 7

Hey Sylvia, the diameter of the lock core side of the B and W Coupler Lock part #BW23FR is 1 inch.

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Answer 8

Hey Eugene, the LMX RED grease like part #L11390 is the best option. It's the most heavy duty, waterproof, and is compatible with basically all greases. I would be cautious not to over fill the hub though as it's pretty easy to blow out seals…

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Answer 9

While we do have some T-Bolts #RR72XB which will fit into the TS Rails for TruXedo Elevate Rack System #TH65FR. I recommend using the hardware which comes with the Tie-Down Kit #TH52FR since the kit comes with 8 T-Bolts as well as washers and nuts.…

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Answer 10

I checked with B&W and their Trailer Hitch Receiver Lock for 3" Hitches item #BW23FR doesn't have a maximum capacity listed because it is rated for a shear strength much higher than the capacity of any 3" receiver and ball mount on…

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Answer 11

The Firestone Ride-Rite Air Helper Springs #F2609 is the only kit that we have that will fit your 2020 GMC Sierra 1500 Denali with the adaptive ride control. The difference is the bracket design that allows that suspension system to fit without…

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