What Timbrens and Spacer do I Need for My 2025 Chevrolet Z71 Trail Boss?
Updated 09/29/2026 | Published 09/09/2026
Products Featured in This Question
Question:
Timbren for Chevy Silverado z71trail boss lt
asked by: John H
Expert Reply:
Hello John,
Welcome to etrailer, I'm glad you found us!
I see that you went ahead and ordered the Timbren Suspension Enhancement System - Rear Axle # T28MR, which is a great choice for your 2025 Chevrolet Silverado 1500 Trail Boss. You probably wrote in because we currently have these listed as not fitting the Trail Boss. I confirmed directly with Timbren that they will indeed fit your Trail Boss, and I am getting our fitment information updated.
Since your Trail Boss has the factory 2" suspension lift, nice choice pairing the Timbrens with the 1" Spacers # A25723-90AH00.
Sorry we didn't get to your question sooner. Our busy season is coming to an end, and we are still getting caught up.
What are you hauling around that you need the extra support for?
Kenny
9/16/2026
I have the system on my 2022 Chevy Silverado 1500, I am well pleased !
Kate F.
9/17/2026
John
9/17/2026
With the Z71 package I’m surprised you are in need for more suspension but I found the Timbren rear axle suspension solved the squat issues I had when hooking up to my camper. The ride is better as well. Good luck finding a fix.
Kate F.
9/17/2026
Mike M.
9/22/2026
Great product, I purchased the SES for my 2024 Chevrolet silverado 1500 crew cab to pull my new 26ft camper without getting rear truck squatting. Truck stays level and adds to my confidence for towing. This is my second second set since I also used one on my 2010 gmc ext cab 1500 pulling a similar bumper hitch camper. Fully satisfied
Kate F.
9/23/2026
Tood S.
9/28/2026
I have a ZR2 and added this to help with towing large trailers and definitely is worth every penny!
Kate F.
9/29/2026
Product Page this Question was Asked From
Timbren Suspension Enhancement System - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Bump Stops
- Suspension Only
- Heavy Duty
- Rear Axle Suspension Enhancement
- Timbren
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Suspension Enhancement
- Shop: Timbren Suspension Enhancement System - Rear Axle
- Q&A: How Much Space Should There Be Between SumoSprings and the Axle Pad on 2020 GMC Sierra 1500?
- Q&A: Will The Timbrens Affect My Ride Quality When Not Hauling a Heavy Load?
- Q&A: Best Suspension Upgrade for 33" Tandem Axles: Road Armor vs Dexter EZ Flex for Ember 22ETS
- Q&A: What SumoSprings are the Best Option for a 2019 Chevy Silverado 1500 Towing a 6,000 lbs Trailer?
- Q&A: Can Trailer with V-Nose Use Weight Distribution System
- Q&A: Recommended Equalizer for a 2018 Coachmen Apex Ultralight
- Q&A: Upgraded Equalizers for Tandem Axle Trailer With Dexter 13-122
- Article: Choosing the Right Suspension Kit for Your Truck and Trailer
- Article: 5 Things to Know About Weight Distribution Hitches
- Article: Do You Really Need Brake Upgrades for Towing? Here's How to Tell
- Article: How to Install a Weight Distribution Hitch (With Pictures & Video)
- Article: Stability Control for Heavy Duty Vehicles
- Article: Is It Illegal to Leave My Hitch on My Truck?
- Article: How to Winterize & De-Winterize Your RV (Simple Guide)
Brandon G.
9/16/2026
I have used this system from Chevy's to Nissans nv 2500. It is a real game changer for sure. I have a fleet of vans and trucks i use on all that need it.