Comparing SuperSprings Sway Control Kit SSA28 and Timbren Jounce Spring Kit TGMRCK15S

Question:

I’m looking to add this to my truck as an upgrade along with the Timbren TGMRCK15S and I’m concerned about the installation method. Specifically...1 Will this attach to the stock leaf springs if I have a 3” block style leveling kit installed under the leaf springs? 2 Is there a mounting bracket or attachment bracket in the center of the super spring to prevent sideways movement? One of your competitors is noting an attachment bracket kit is required for installation. How does this attach to a 15 GMC Sierra 4x4? Is there a different product or setup that you’d recommend? I have the MAX tow package on the truck, but I’m looking for a good amount of reduction of the front to rear bounce and slight sway that I experience when towing my 10,000 GVWR travel trailer.

asked by: Jacob T

Helpful Expert Reply:

The SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA28 is a confirmed fit on the 2015 Sierra 1500 4x4 even if it has a 3-inch block lift.

In terms of sway control this will provide better results than Timbren kit # TGMRCK15S since it supports the primary suspension whenever it is under any load, such as from a wind blast. Timbren springs do not do anything until the truck is loaded to the point that they contact the axle.

SuperSprings kit # SSA28 includes a set of polyurethane blocks that seat between the top of the factory springs and the underside of the SuperSprings to keep them from shifting. My technical contact at SuperSprings confirmed compatibility with your block lift and that the included seats will hold the helper springs in place on the OEM spring stack. Their 1500-lb rating is fine for your trailer's weight.

expert reply by: Adam R