Pro Comp 55728B Box Kit for Jeep Wrangler JK Instruction Manual

1. Introduction

This instruction manual provides detailed information for the proper installation, operation, and maintenance of the Pro Comp 55728B Box Kit for Jeep Wrangler JK. This kit is designed to increase tire and ground clearance, enhancing your vehicle's capabilities. Please read this manual thoroughly before beginning any installation or operation to ensure safety and optimal performance.

2. Safety Information

WARNING:

• Professional installation is recommended for all suspension components.
• Always wear appropriate personal protective equipment (PPE) including safety glasses and gloves during installation.
• Ensure the vehicle is securely supported on jack stands before working underneath it. Never rely solely on a jack.
• Disconnect the battery before performing any electrical work.
• Verify all fasteners are tightened to manufacturer specifications.
• After installation, perform a thorough inspection of all components and test drive the vehicle in a safe environment.
• Failure to follow these safety guidelines could result in serious injury or property damage.

3. Included Components

The Pro Comp 55728B Box Kit includes the following parts:

Image: Components of the Pro Comp 55728B Box Kit. This image displays the various components included in the Pro Comp 55728B Box Kit. It features a large, irregularly shaped black metal bracket, likely for mounting. Below it are four smaller black metal pieces, two appearing as U-shaped channels and two as rectangular blocks, which serve as spacers or mounts. To the right, two silver, cylindrical metal spacers with central holes are visible. All components are designed for vehicle suspension modification.

• Front Suspension Components (e.g., spacers, brackets)
• Lift Blocks
• Installation Hardware/Brackets

Note: Specific quantities and exact component designs may vary slightly. Refer to the packaging for a precise list.

4. Setup and Installation

This kit is designed for a 2.5-inch lift and is intended for the front auto part position of a Jeep Wrangler JK. Installation requires mechanical knowledge and appropriate tools. If you are not comfortable performing this installation, seek assistance from a qualified professional.

4.1. Pre-Installation Checklist

• Ensure you have all components listed in Section 3.
• Gather necessary tools (e.g., wrenches, sockets, torque wrench, jack, jack stands, wheel chocks).
• Park the vehicle on a level surface and engage the parking brake.
• Chock the rear wheels to prevent movement.

4.2. Installation Steps (General Guidelines)

1. Lift Vehicle: Safely lift the front of the vehicle using a jack and support it securely with jack stands under the frame. Remove the front wheels.
2. Disconnect Components: Carefully disconnect necessary front suspension components, such as sway bar links, brake lines (if required for clearance), and shock absorbers, following your vehicle's service manual.
3. Install Lift Components: Install the provided lift blocks, spacers, and brackets according to the specific instructions included with your kit. This typically involves placing spacers above or below the coil springs and installing new brackets for relocated components.
4. Reassemble: Reconnect all disconnected suspension components. Ensure all bolts are tightened to the vehicle manufacturer's torque specifications.
5. Lower Vehicle: Reinstall the front wheels and carefully lower the vehicle to the ground.
6. Final Checks: Bounce the vehicle to settle the suspension. Re-check all fasteners for proper torque.

Important: An alignment is highly recommended after installing any lift kit to ensure proper steering and tire wear.

5. Operating Considerations

After installing the Pro Comp 55728B Box Kit, your Jeep Wrangler JK will have increased ground clearance and the ability to accommodate larger tires. Be aware of the following:

• Center of Gravity: A lifted vehicle will have a higher center of gravity, which can affect handling characteristics, especially during cornering. Drive cautiously until you are accustomed to the new feel of the vehicle.
• Tire Clearance: The 2.5-inch lift provides additional clearance for larger tires. Ensure your chosen tire size is compatible with the lift and does not cause rubbing during full suspension articulation or steering.
• Off-Road Performance: The increased clearance is beneficial for off-road driving, allowing easier navigation over obstacles.

6. Maintenance

To ensure the longevity and performance of your Pro Comp 55728B Box Kit and associated suspension components, regular maintenance is recommended:

• Regular Inspection: Periodically inspect all components of the lift kit, including bolts, brackets, and spacers, for signs of wear, damage, or loosening.
• Torque Checks: Re-check the torque on all fasteners after the first 500 miles of driving and then every 5,000 miles or during routine vehicle maintenance.
• Cleaning: Keep the components clean, especially after off-road use, to prevent corrosion and buildup of dirt and debris. The powder-coated finish provides protection, but regular cleaning helps maintain it.

7. Troubleshooting

If you encounter issues after installation, consider the following common troubleshooting steps:

• Uneven Ride Height: Double-check that all components are installed correctly and on the appropriate sides of the vehicle. Ensure all fasteners are torqued evenly.
• Unusual Noises (Clunking, Squeaking): Inspect all connections for looseness. Ensure no components are rubbing against each other or the vehicle frame. Lubricate bushings if applicable.
• Steering Issues (Pulling, Loose Steering): This often indicates a need for a professional wheel alignment. Also, check for loose steering components or incorrect installation of track bar brackets.
• Vibrations: Check driveshaft angles and ensure all components are balanced and properly installed.

If problems persist, consult a qualified automotive technician or contact Pro Comp customer support.

8. Specifications

9. Warranty

The Pro Comp 55728B Box Kit is guaranteed for the life of your vehicle. This warranty covers manufacturing defects and material failures under normal use. For specific terms and conditions, please refer to the official Pro Comp warranty documentation or contact customer support.

10. Customer Support

For technical assistance, warranty claims, or further information regarding the Pro Comp 55728B Box Kit, please contact Pro Comp customer support through their official website or authorized dealers. Always provide your product model number (55728B) when seeking support.