1. Introduction
This manual provides essential instructions for the proper installation, operation, and maintenance of your Proven Industries WL-200 J-Style Wheel Lock. This device is designed to enhance the security of your trailer by preventing unauthorized movement. Please read these instructions thoroughly before use to ensure correct application and maximum effectiveness.
2. Compatibility and Important Considerations
The Proven Industries WL-200 J-Style Wheel Lock is specifically designed for:
- Leaf-spring trailers only.
- Trailers with 15-inch or 16-inch wheels.
- Trailers with standard factory steel-rim wheels.
- Important: This lock will NOT work on any trailer equipped with brakes (disk or drum) on either axle.

Image 2.1: The WL-200 wheel lock is compatible with 15-inch and 16-inch trailer rims.
Ensure your trailer meets these criteria before attempting installation.
3. Package Contents
Verify that all the following components are included in your package:
- 1 x WL-200 J-Style Wheel Lock Bar
- 1 x Puck Lock
- 2 x Keys for the Puck Lock

Image 3.1: Included components: wheel lock bar, puck lock, and keys.
4. Setup and Installation
Follow these steps to properly install your WL-200 J-Style Wheel Lock:
- Measure for Correct Fit: Before installation, it is crucial to determine the correct length required for your trailer. Measure the distance from the inside of the leaf spring to the outside face of the wheel rim. This specific WL-200 model is the "Short" version, designed for measurements less than 8-1/2 inches.
- Position the Lock Bar: Place the J-style wheel lock bar over the trailer wheel, ensuring the curved part of the 'J' hooks around the wheel rim and the straight bar extends towards the leaf spring. The lock is designed to fit any lug pattern.
- Align with Leaf Spring: Slide the lock bar until the end with the hole aligns with the leaf spring. The lock bar should sit snugly against the wheel and the leaf spring.
- Insert Puck Lock: Once the lock bar is correctly positioned, insert the provided puck lock into the designated opening at the end of the lock bar.
- Secure the Lock: Use one of the provided keys to turn the puck lock, securing the wheel lock in place. Ensure the lock is fully engaged and cannot be removed without the key.

Image 4.1: Guide for measuring the required lock length.

Image 4.2: The WL-200 J-Style Wheel Lock correctly installed on a trailer wheel.
5. Operation
To operate your WL-200 J-Style Wheel Lock:
- Locking: Follow the installation steps in Section 4. Once the lock bar is in place, insert the puck lock and turn the key to secure it. Remove the key and store it in a safe location.
- Unlocking: Insert the key into the puck lock and turn it to disengage the locking mechanism. Remove the puck lock from the bar, then remove the lock bar from the wheel.
The unique key design of the puck lock helps prevent lock picking and unauthorized key duplication.
6. Maintenance
To ensure the longevity and reliable performance of your wheel lock:
- Cleaning: Periodically clean the lock bar and puck lock with a damp cloth to remove dirt and debris. Avoid harsh chemicals that may damage the powder-coated finish.
- Lubrication: Apply a small amount of graphite lubricant or a silicone-based spray to the puck lock mechanism every 6-12 months, or as needed, to ensure smooth operation. Do not use oil-based lubricants as they can attract dirt.
- Inspection: Regularly inspect the lock for any signs of wear, damage, or corrosion. If any significant damage is observed, discontinue use and contact customer support.
7. Troubleshooting
If you encounter issues with your WL-200 J-Style Wheel Lock, consider the following:
- Lock does not fit: Double-check the compatibility requirements in Section 2. Ensure your trailer has leaf springs, 15-inch or 16-inch wheels, and no brakes. Verify your measurement from the leaf spring to the rim to confirm the "Short" version is appropriate (less than 8-1/2 inches).
- Puck lock is stiff or difficult to turn: Apply a graphite or silicone-based lubricant to the lock mechanism. Ensure the key is fully inserted and free of debris.
- Keys are lost: Contact Proven Industries customer support for assistance with key replacement. Note that the unique key design prevents easy duplication.
8. Specifications

Image 8.1: Key specifications of the WL-200 J-Style Wheel Lock.
| Feature | Detail |
|---|---|
| Model Name | WL-200 |
| Brand | Proven Industries |
| Lock Type | Puck Lock |
| Material | Alloy Steel |
| Finish Type | Powder Coated |
| Special Feature | Cut Resistant |
| Color | Blue |
| Size (Short Version) | Less than 8-1/2 inches (measurement from leaf spring to rim) |
| Item Dimensions (L x W x H) | 15 x 1.5 x 4.5 inches |
| Item Weight | 4.7 Pounds |
| Recommended Uses | Securing trailer wheels on leaf-spring trailers (15-inch or 16-inch wheels, no brakes, standard factory steel-rim wheels). Suitable for single- and tandem-axle trailers. |
9. Warranty and Support
For warranty information, product support, or to purchase replacement parts (such as keys), please contact Proven Industries directly. You can find their contact information on their official website or through their Amazon Brand Store: Proven Industries Amazon Store.