JFTJ - Timbren SES Suspension Upgrade

This SES Suspension Upgrade fits the front suspension of a Jeep Wrangler TJ, JK & JL. Each laser-cut piece of steel is precision welded and powder-coated to ensure a quality fit. We’ve engineered our hollow rubber springs to deliver a progressive spring rate.   In other words, the more weight that pushes down on the rubber springs (weight from a snowplow or heavy aftermarket accessories – such as a steel bumper) the harder they work to prevent front-end sag.

This SES Suspension Upgrade replaces the jounce stop inside the coil spring. Its unique design ensures superb ride quality – loaded or unloaded. (There should be a ½” to 1” gap between rubber spring and axle to ensure unloaded ride quality.) Unlike other auxiliary spring systems, the SES Suspension Upgrade guarantees the best of both worlds.

Product Features

  • Eliminate Vehicle Squatting & Sagging
  • Cushion Road Shocks
  • Improve Handling
  • Satisfaction Guarantee
  • Lifetime Warranty
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Customer Reviews

"The Timbren system is the answer for rear end sag and soft handling! My 35ft 5th wheel handles much better, and I recommend Timbren without reservation."

- Larry V. - SD

“Timbren's work amazing! Absolutely as good or even better than air bags! Did it myself and only had time to drink 2 beer doing it! Easy install. Thanks for the advice. Simple yet very effective.”

- Jonny K - NB

Fitment Checklist

  • Jeep Wrangler JL & JLU
    • Jeep Wrangler JK & JKU
    • Jeep Wrangler TJ
  • 2018-2020
    • 2007-2018
    • 1997-2006
  • 4WD Only, Fits Front Suspension Only
    • 4WD Only, Fits Front Suspension Only
    • 4WD Only, Fits Front or Rear Suspension