4Wheel & Off-Road Homepage 4-Wheel & Off-Road
Facebook Newsletter

2008 Jeep Wrangler JK Unlimited - JK Madness!

A Built-To-The-Hilt Four-Door Wrangler

By , Photography by

The Wrangler JK has been the bestselling Jeep since it was released in 2007. In just three years over 350,000 have been sold. Even in a recession the capable two- and four-door trail machines still sell like fresh tuna at a cat convention. This makes sense, as the JK Rubicon is one of the most capable vehicles ever to wear the Jeep logo. But as capable as the JK is, it can still be improved. Bigger is better, and more engine power is even greater.

Chris Coffey of Huntington Beach, California, has always had a soft spot for Jeeps, but the smaller, older-style machines didn't fit his lifestyle. Once the family-friendly four-door Wrangler Unlimited was released, he saw the opportunity to finally have the Jeep he always wanted. Chris took his new JK to Off-Road Evolution in Fullerton, California, and had the crew transform the competent four-door wheeler into the four-wheel monster it is today.

The factory 3.8L engine is great for a minivan, but not a trail rig spinning 42-inch BFGoodrich KM2s. This 420hp 6.1L Hemi engine conversion kit was picked up from American Expedition Vehicles. This kit is relatively easy to install, offers massive horsepower gains over the stock 3.8L engine, and looks like a factory installation.
The factory 3.8L engine is great for a minivan, but not a trail rig spinning 42-inch BFGoo

Tech Specs
2008 Jeep Wrangler Unlimited
Drivetrain
Engine: 6.1L Chrysler Hemi
Transmission: 545RFE 5-speed automatic
Transfer case: Atlas 5.4:1
Front Axle: Dynatrac ProRock 60, ARB locker, 5.38 gears, Stub Hubs, CTM U-joints
Rear Axle: Dynatrac ProRock 60, ARB locker, 5.38 gears

Suspension
Springs & Such: (front) Evo/King 14-inch coilovers, King hydraulic bumpstops; (rear) Evo Double Throwdown cantilever system with 14-inch coilovers and triple-bypass shocks
Tires & Wheels: 42X14.50R20 BFGoodrich M/T KM2, 20x8.5 Walker Evans beadlocks
Other Stuff: Hanson front and rear bumpers, Warn Powerplant HD winch, Zenon fenders, PSC hydro assist, JE Reel 1350 driveshafts

  • The superflexy suspension is built around a Tera Flex Pro LCG long-arm suspension, which was upgraded with Evo control arms and frame brackets. The front of the rig is fitted with specially valved Evo/King 14-inch coilovers.
    The superflexy suspension is built around a Tera Flex Pro LCG long-arm suspension, which w
  • Off Road Evolution's Double Throw Down rear cantilever suspension is fitted with two Evo/King 14-inch coilovers and two Evo/King triple-bypass shocks. The system offers 14 inches of vertical suspension travel, and it's completely bolt-on.
    Off Road Evolution's Double Throw Down rear cantilever suspension is fitted with two Evo/K
  • The utilitarian cab of the Chris's JK was fitted with a six-point Rock Hard sport cage that ties into the factory rollbar for safety. The ARB Air Locker switches for the front and rear axles are mounted in the center console using a Daystar switch panel.
    The utilitarian cab of the Chris's JK was fitted with a six-point Rock Hard sport cage tha
Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!

*Please enter your username

*Please enter your password

*Please enter your comments
Comments:
Not Registered?Signup Here
(1024 character limit)
4Wheel & Off-Road