DIY Fabrication Parts

Jeep Wrangler TJ/LJ/YJ Link Suspension Kit


Shipping to United States: $90.00
  • Details
    We are out of stock on these until Fall 2019. However, if we have 3 orders or more, we will make a small batch run. Thanks for your understanding!

    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
    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.

    RELEASE OF LIABILITY: Duke Engineering Solutions is NOT responsible for any risks or injuries when installing, handling, or using the Duke Engineering Solutions Frame Mount Link System. This system is to be used for OFF ROAD purposes only and at your own risk! The system is intended to be FULLY WELDED to the frame of your Jeep Wrangler. Incorrectly, insufficient, or otherwise risky installations of these kits can result in injury or harm. Ensure the installation of these kits is performed by qualified individuals and all use is performed OFF ROAD.

    If you have any questions or concerns, feel free to message us and we'll get back to you immediately.


    These weight quite a lot and we are still working on finding the most economical shipping method. Thus far, FedEx ground has been most economical and efficient. We have a fixed shipping cost at the moment but we are working on calculated shipping costs soon.
  • Shipping & Policies

    Shipping from United States

    Processing time

    2-4 weeks

    Payment Options

    Secure options
    • Accepts Etsy gift cards

    Returns & Exchanges

    I gladly accept returns and exchanges

    Just contact me within: 14 days of delivery

    Ship items back to me within: 30 days of delivery

    I don't accept cancellations

    But please contact me if you have any problems with your order.

    The following items can't be returned or exchanged

    Because of the nature of these items, unless they arrive damaged or defective, I can't accept returns for:

    • Custom or personalized orders
    • Perishable products (like food or flowers)
    • Digital downloads
    • Intimate items (for health/hygiene reasons)

    Conditions of return

    Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.