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Timbren Kit for Chevy 1500 Sierra, Silverado [Extended & Crew Cab] (1999-06) - 4WD - REAR


Model: GMRCK25S
by Timbren

Free Shipping

Retail Price: $310.95
Your Price: $238.52
+ 10% OFF SALE

Sale Price: $214.67

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Front / Rear



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.

  • 6,000 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 GMRCK25S Timbren Suspension Kit

Product Video

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
  • Model: Chevy 1500 Sierra, Silverado
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 Rodger R

Work great - leveled out my 11 year old pickup and improved the handling. Towed a car trailer recently and it stayed nice and level. Biggest headache was getting the old bolts out. Definitely recommend them.

5 of 5 Stars

by Gregg L

I purchased this Timbren kit for my 2004 Sierra Crew Cab Z71 so I could haul a skid of wood pellets in the back. I don't have to go far but the rear end sagged pretty bad with a skid of pellets loaded to the front of the box. Someone at work told me about Timbren's. I bought the kit and opened the box. Not much inside. A couple steel brackets, some hardware and two rubber springs. They are a piece of cake to install. I did it in the driveway in about 45 minutes, start to finish. It made a big difference in the way the truck sits with a heavy load in the back. It seems to handle better loaded, too. These are not really a substitute for a HD truck if you haul heavy on a regular basis. They do work well for the occasional short trip with a full bed. did a nice job with speedy shipping and a fair price compared to the other sellers I looked at.

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