USA Staff Available - 1 (877) 774-6473
HELP DESK |  Login |  View Cart  View Cart
Truck Springs Logo - Suspension Specialists Since 1971 SDTruckSprings Logo and Header

Timbren SES Kits Ship in 1-2 Days*
1 (877) 774-6473

Timbren Kit for Chevy 1500 Sierra, Silverado, Denali (1999-2021) SEVERE SERVICE 7,000 lbs. - 2WD/4WD - REAR


Model: GMRTT15S
by Timbren

Free Shipping

Retail Price: $364.95
Your Price: $280.50
+ 10% OFF SALE

Sale Price: $252.45

Add to Cart:


Front / Rear



Easy 1-2-3 Installation

 Remove Bump Stops

 Attach Brackets

 Bolt On Spring


This is a heavy duty timbren capable of 7,000 lbs of level load support.

From highway driving, to heavy load applications, the Timbren Suspension Enhancement System will protect your current suspension, and will improve the performance of your vehicle whether it’s a pickup, suv, medium duty straight truck, or a full size class 8 truck.

The Timbren Suspension Load Booster is designed to provide stability, reduce swag, eliminate sway, and level the vehicle for an overall improved, "rubber cushion" ride - on or off the road. All while maintaining the current ride height.

If your Chevy 1500 Sierra, Silverado leans on turns and curves, drifts on the highway, bottoms out, or provides a general bumpy ride when loaded, a Timbren Suspension Kit is the solution for your suspension problem.

The Timbren Kits we offer are extremely simple to install, require no maintenance, and come with a lifetime of use backed by warranty. The award winning "over load" systems are made of Rubber Aeon Springs and designed to provide maximum performance for stock suspensions.

What is Severe Service?

While searching for the right Timbren SES Kit for your truck you will notice some of the products will say severe services. These are products that are designed for pickup trucks that are used in one of the following way: Slide in Camper, Slid in Salt or Sand Spreader, Dump Body or Tow Truck Body and Aerial Device. These assemblies will generally come with a single convolution rubber spring. This anti twist rubber spring will provide a better stability and longer life than the standard set. When a standard set is used in the applications, failure may occur due to the high center of gravity and the excess sway. Often the rubber springs will twist and can be lost.

  • 7,000 lbs. Level Load Capacity
  • Reduces sag and sway
  • Eliminate vehicle from bottoming out
  • Perfect for handling heavy cargo loads
  • Ride quality unaffected when not loaded
  • Sold as Pair (left and right)
Installation Instructions

Instructions for Installing GMRTT15S Timbren Suspension Kit


Timbren Kits are made to increase the "level-load" carrying capacity of your vehicle. Never load the vehicle beyond the manufacturer's maximum gross vehicle weight rating (GVWR).

Vehicle Applications
  • Years: 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010. 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
  • Model: 1500 Sierra, Silverado
  • Years: 2021
  • Model: 1500 Sierra, Silverado w/ Magnaride Suspension
CA Residents: Prop 65 Warning
Customer Reviews
5 stars 5 / 5This item is rated 5 out of 5 based on 2 customer reviews.
5 of 5 Stars

by Terry E

Installs easy and does what it says. Another fine Timbren product.

5 of 5 Stars

by Brian C

Product works great under load an really stabilizes the truck. Partially loaded vehicle has a rough ride but item is quickly changed out when not using vehicle for heavy hauling. Purchased a second set of these for a 2008 Silverado this evening. Wish I had bought them sooner! Great product!

Displaying 1 to 2 (of 2 reviews)


Write Review

Call Us - 1 (877) 774-6473
Mon-Thur: 8AM - 11PM | Fri: 8AM - 10PM | Sat: 9AM - 6PM

Live Help Available at Times Listed Above
accepted credit cards

85-7 Air Park Dr | Ronkonkoma, NY 11779
Items shipped from multiple U.S. warehouses.

Copyright ©2022 All Rights Reserved