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Timbren GMFK25D GM 2011-2021 2500/3500HD Progressive Front Bump Stop System

GMFK25D - 9A
Excellent for Plow Trucks & Commercial Vehicles
Pricing: $225.40

Free Shipping


The Timbren GMFK25D Suspension Kit is designed to enhance the front suspension of your LML and L5P. Timbrens are the go to suspension upgrade for commercial trucks and plow trucks that have additional weight added to the front of the chassis. Timbrens hollow rubber springs are engineered 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.



  • Easiest to use: Rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions. Easiest to maintain: There are no airlines or fittings to allow leaks. Simply bolt the kit on and you are set for a lifetime of trouble free suspension.
  • Easiest to install: There are no holes to drill, no airlines to route and SES Kits can be installed in a matter of minutes using basic hand tools. The softer ride quality of todays trucks and the mediocre suspensions found on most trailers can cause excessive trailer sway, instability and suspension settling. Timbrens high performance suspension packages will ensure added safety and peace of mind.


2011-2021 2500/3500HD GMC/Chevy Gas and Duramax Trucks

GMFK25D replaces the bumpstops on the front suspension of the 2011-2021 GMC Sierra and Chevy Silverado 2500HD and 3500HD pickup truck and cab and chassis models.


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

This kit is rated at 8000 lbs capacity. Even though you’re increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.



Shipping Information

  • Item Requires Shipping
  • 15.0 lbs.
  • W12.0000” x H6.0000” x L12.0000”
  • Free Shipping

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