Note: This is NOT a frame, it is a Suspension Kit! The frame/chassis pictured is for reference only.
These are now officially released in our store. The Duke Engineering Solutions Frame Mount Link System (FMLS) is a complete frame mounted suspension kit for Jeep Wranglers TJ, LJ, and YJ that is intended to be fully welded to your factory Jeep frame. Skid plate and hardware sold separately. We are aiming to keep these in stock to allow 3-4 day shipping. At this time, there is a 2-3 week lead time until we are completely spun up but will ship them as fast as we can. All DES FLMS are LASER CUT and CNC FORMED! A specific system for the Jeep Wrangler YJ is coming soon, however, this system can be custom fitted to the YJ frame easily with clamps and jigging.
Optimal suspension geometry for high speed performance and rock crawling. We will be offering axle brackets in the future for a complete kit. The numbers below are for a typical Jeep Wrangler TJ/LJ/YJ with 37 to 40" tires and 1 ton axles. This is a REFERENCE, and these numbers change depending on your vehicle setup. These suspension kits MUST BE WELDED in place!
Designed around 37 to 40 inch tires
Works with factory frames or modified units
Bolts into factory skid plate holes in frame for reference
MUST BE WELDED FULLY TO THE FRAME!
20” from ground to frame shown as example
16.75” from ground to skid plate shown as example
104” Wheelbase shown as example only
8.5” Vertical separation at axles shown as example
3" vertical drop from frame to belly skid
Upper control arm mounts allow adjustable vertical separation:
Front - 4.75”, 6.25”, or 7.75” separation choices
Rear - 4.75” or 6.25” separation choices
25.5” horizontal separation at front lowers
32.0” horizontal separation at rear lowers
This is cut primarily from 1/4" steel and has a couple 3/16" gussets to decrease weight. We only use American grade A36 steel for these. They are laser cut and cnc finger brake formed. We do not cut corners and will be tacking together these assemblies with fixtures and mock-up bushings if that option is selected. A standard Frame Mount Link System (FMLS) does NOT come tack welded together. These are shipped as flat plate that is cnc cut and bent and you must jig and tack weld together unless you select the tack weld option.
Standard bolt hole size is 9/16 with a 2-5/8" mounting width as standard. We can accommodate other bolt sizes and custom orders. 4 Link now available and "Tacked" option means we will tack weld it. If "Tacked" is not selected, these are checked for fitment then shipped as flat plate that has been cut and bent. You are selecting what type of front suspension you want: A 3 Link on either the Driver's Side or Passenger's side, a 4 Link, or a Tack Welded Option ("Tacked") of those same three. All versions have triangulated upper rear suspension with slightly triangulated lowers.