Please contact us with any questions or comments you may have, and we will respond to you promptly.


PO Box 51533
Phoenix, AZ 85076

Frantz Design Works is focused on high-quality design and the production of premium automotive products.  Our flagship product, the WJ Incline Bumper, has been a favorite of Grand Cherokee offroading enthusiasts for years.  With cutting-edge style and unbeatable performance on the toughest trails, this bumper is sure to transform the look of your vehicle and make you stand out from the pack.


WJ Incline Bumper

The WJ Incline Bumper is the premier offroad custom winch bumper for 1999, 2000, 2001, 2002, 2003, and 2004 Jeep Grand Cherokees.  Modify your Jeep with a custom front WJ bumper from Frantz Design Works.

WJ Incline Bumper

The WJ Incline Bumper is the premier offroad winch bumper for 1999-2004 Jeep Grand Cherokees.  Whether you're a beginner doing your first modification, or you're a hardcore offroading enthusiast running on 1-ton axles with 40-inch tires, the WJ Incline Bumper provides strength, performance, and style that cannot be matched. 


  • Built from a combination of 1/4" and 1/8" thick steel plate and MIG welded to protect your WJ from the trail.
  • Heavy-duty mounting brackets sandwich the uni-body chassis to ensure that the bumper remains in place under all offroad conditions.
  • 1" thick D-ring mounts for ultimate strength for recovery operations.
  • Winch is mounted to the chassis using all 1/4" thick steel plate to provide secure and safe winch use.


  • Holds up to a 10,000 lb winch in an unobtrusive manner and greatly improves approach angle and tire clearance.
  • Design enables use as a glide plate to get your vehicle up and over obstacles, and supports the weight of the front end, should you happen to slide down on it.
  • Light mounting ports are designed to protect the lights from the trail and can be aimed straight or angled for desired light output.
  • Side plates can be easily trimmed to match fenders if needed to clear larger tires.


  • The bumper lines follow the body lines unobtrusively, and still provide the protection and ground clearance needed to keep you inclining and moving forward.
  • Fully designed using 3D CAD software and manufactured with CNC Plasma cutters to ensure optimum fit, finish, and quality.
  • All outer edges are sanded smooth for a clean look.
  • Bumper comes unfinished, so that you can paint or coat it as you wish.
  • 100% American made in Phoenix, Arizona.


  • Unlike the competition, the Incline Bumper has thick steel where you need it, and thin steel where you don't...maximizing strength while minimizing weight.
  • The lower portion of the Incline Bumper is angled for high clearance and the ability to easily slide over obstacles.
  • Designed with aesthetics in mind, the Incline Bumper has a streamlined look and is held as close to the body as possible, following the natural lines of the Grand Cherokee.
  • The lower radiator protection on the Incline Bumper is made from tubing for true protection of your radiator, while still allowing for maximum airflow.
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The WJ Incline Bumper is available for $1,199 plus shipping/tax.

*The WJ Incline Bumper fits all 1999-2004 Jeep Grand Cherokees.  Some model years require cutting of OEM grill and bumper.  All model years require minor sheet metal cutting on the vehicle (see installation instructions).  Compatible with most 8,000-10,000 lb winches, including Warn M8000, VR8000, VR10000S, Smittybilt X20 (10,000 lb), Smittybilt XRC8000, or any winch with 4.5" x 10" mounting and fits within a 24.25" x 6.5" footprint.  Warn Zeon, 9.5XP, 9.5CTI and XD9000i do not fit.  Set up for Hawse type fairlead, 3/4" sized D-rings, and 5" lights (ProComp 55 or similar).  Fairlead, D-rings, and lights are not included.  Please view our Terms & Conditions for more information.

** Jeep and Grand Cherokee are copyrighted and trademarked to Jeep/Chrysler corporation.