Dirt King Long Travel Kit | GMC Yukon (2007-2020)

The Dirt King Long Travel Kit is engineered to dramatically improve off-road suspension articulation and wheel travel while maintaining everyday drivability. This long travel suspension system is CAD designed, thoroughly tested, and built in the USA to deliver significant performance gains over stock suspension components.

This kit allows for approximately 12 inches of front wheel travel and accommodates up to 37-inch tires with appropriate clearance modifications. It includes reinforced upper and lower control arms with heavy-duty Moog ball joints, extended brake lines, and limit strap components to support aggressive terrain and extended suspension movement.

Designed as a bolt-on solution for compatible models, the system offers tuning flexibility with coilovers, bump stops, or bypass shocks to match ride quality and performance goals. Whether for trail riding or high-speed desert runs, this long travel kit brings superior articulation and control.

Specifications

• Wheel Travel: 12”
• Amount of Lift: 1-3”
• Track Width: 3.5” wider per side
• Maximum Tire Size: 37”
• Maximum Backspacing: 5”
• Minimum Rim Size: 17”
• Coil over Shock Size: 2.5” x 8”
• Bypass Shock Size: 3.0” x 8”
• Bump Stop Size: 2.0” x 2.0”
• Compatible with Sway Bar: Yes (DK-631955) 

Options
This suspension system allows for several different options to suit your needs. The 2.5” x 8” coil over can be installed with one of the following options, sway bar, bump stops, or bypass shocks. We offer a sway bar kit that adapts our long travel kit to work with the factory sway bar. This will give the vehicle similar on road driving characteristics to stock with minimal sacrifice to the suspension systems performance. The next option is installing bump stops. They will help dampen hard impacts and are cost effective but on the other hand are often noisy. The last option is most commonly used. Adding bypass shocks will fine tune the damping throughout the suspension cycle. They are also completely adjustable to perfect the ride quality. 

Shocks
For the best performance and to achieve the full amount of travel you must purchase our spec built coil over shocks or have them custom built based on our shock spec sheet. In addition, our long travel kit is tabbed to accommodate bypass shocks.  The bypass shocks will allow for superior suspension dampening and tunability. To mount the bypasses we offer a weld on bypass shock hoop kit (DK-631910) that can be purchased separately. The bypass shock hoop kit requires welding and modifications to the frame. You have the option of installing 2.5” diameter by 8” stroke bypass shocks or 3.0” diameter by 8” stroke bypass shocks.

Wheel Travel
When shopping long travel kits many consumers tend to focus just on travel numbers. This is the reason many companies claim inaccurate numbers or don’t disclose the amount of work involved to achieve these numbers. Our goal is to build a suspension system with the highest amount of wheel travel without requiring major modifications to the vehicle or compromising its overall drivability.

Tire Info
When installing 37” tires with this kit you must modify the wheel wells to avoid contact at full bump. We have solved this problem by developing complete bolt on front wheel wells for proper tire clearance. The firewall pinch weld will also need to be folded over to clear the 37” tires. 

What's Included

• Boxed plate upper control arms 
• Boxed plate lower control arms
• 9" quad wrapped limit straps
• Weld on adjustable limit strap mounts
• Moog ball joints
• 17-4 stainless steel misalignment spacers
• 17-4 stainless steel tie rod extensions
• DOT approved extended brake lines 
• Grade 8 mounting hardware
• Probearing bearings
• Delrin steering stops
• Lower Arm Weld Washers

Features

• Bolt on application, minimal modifications required 
• Utilizes Probearing bearings
• Utilizes Moog ball joints
• 4130 chromoly uniball cups
• 4130 chromoly ball joint cups
• Delrin bushings for the UCA’s and LCA’s
• Zinc plated inner bushing sleeves
• Grease fittings for easy servicing             
• 3/16" and 1/8” boxed plate construction
• Internally ribbed with extrusions for weight reduction
• Bump stop plating
• Limit strap tabbing
• Bypass tabbing
• Ability to adapt factory sway bar

Compatibility

GMC Yukon 2WD / 4WD 2007-2020

Front fiberglass required.

Installation

Install using factory mounting points and the included hardware. Modify wheel wells for full tire clearance if needed, fit chosen shock system (coilover, bump stops, or bypass), then torque hardware to specification. Professional alignment and shock setup are recommended after installation.