Recommended Air Bags and Spacers for a 2021 Chevy Silverado 3500 w/a 4" Lift
Updated 12/08/2025 | Published 11/22/2025
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Question:
Hi there. I am looking to get some air springs for my 21 Silverado 3500. I have a 4 inch lift so will need some spacers as well. I was hoping you could send me the correct products to buy. I am trying to find the ride rites that would work but can’t find the spacers compatible. Thank you!
asked by: Alex S
Expert Reply:
Hey Alex. The Firestone Air Helper Springs item # F2613 is going to be the correct Ride-Rite kit for your 2021 Chevy Silverado 3500. These air springs, and their included brackets, work with both the 2WD and 4WD models and are compatible with in bed hitches.
Which spacers you need are going to be determined by how much lift is in the rear end of your Silverado. Most 4" lift's, like mine on my Silverado, are only 2"ish inches in the rear.
If your truck has a rear lift of 2" you'll need the Lift Spacers for Firestone Ride-Rite Air Helper Springs item # F2366. For 3" item # F2368, for 4' item # F2371.
I recommend adding the Firestone Air Command item # F2610 to your truck. This onboard compressor will allow you to adjust the PSI in your air bags from your phone.
How much of a lift does the rear of your Silverado have?
You can add this information and any other questions you have where it says Reply to Jerred H and I'll be happy to answer them.
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Product Page this Question was Asked From
Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Air Springs
- Suspension Only
- Heavy Duty
- Rear Axle Suspension Enhancement
- Firestone
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Jerred H.
12/8/2025
Hey Alex, what did you find for the rear lift height on your Silverado? Once you have that number, it’ll be easy to match the right Ride-Rite spacers for your setup. Let me know what you measured—I can help confirm the best fit.