Which Pacbrake Air Bags fit 2025 Chevy Silverado/GMC Sierra 1500 Trail Boss/AT4
Updated 09/26/2025 | Published 04/23/2025
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Question:
Im looking at a 2025 TrailBoss or Zr2 silverado. Which PacBrake air bag kit is correct? Thanks!
asked by: Zach H
Expert Reply:
Hey Zach! If you're getting a 2025 Trail Boss/AT4 you need the Pacbrake Alpha HD # PB69SV or Pacbrake Alpha HD Pro # PB79SV. Both come with the spacer required to fit these trim levels. The Alpha HD is your standard set of air bags and the Alpha HD Pro has internal jounce bumpers which lets you run the air bags at 0 psi when you aren't towing or hauling.
I also recommend adding an air compressor like the Pacbrake # PB49MV. This will allow you to control the air bags from the cab of your new truck no matter where you go. It is a wireless system so you can control it with the included remote or via the app on your phone.
Product Page this Question was Asked From
Pacbrake Alpha HD Pro Air Bag Suspension Kit w/ Internal Jounce Bumpers - Rear Axle - 5,000 lbs
- Vehicle Suspension
- Towing/Load Leveling
- Air Springs
- Suspension Only
- Heavy Duty
- Rear Axle Suspension Enhancement
- Pacbrake
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Robin H.
9/26/2025
Hey Zach, did you decide on the Pacbrake Alpha HD or the Alpha HD Pro for your truck? I'm curious to know how it worked out for you, as it could help others looking for the right air bag kit.