X-Chock Wheel Stabilizer

Article Type: Product Recommendation
Author: RV Pro Solutions (Certified NRVIA Inspector Insight)
Applies To: Tandem-axle travel trailers and fifth wheels with 1 3/8-inch to 10-inch spacing between tires

Overview

The BAL X-Chock model 28012 is a two-pack of tire stabilizers for tandem-axle trailers. Each unit expands between adjacent tires and applies opposing force to reduce tire movement while the RV is parked. BAL specifies a working range from 1 3/8 inches to 10 inches and includes a plated ratchet wrench.

An X-Chock is a stabilizer, not the primary device that prevents the trailer from rolling. Conventional wheel chocks should be placed and the trailer should be leveled before the X-Chocks are installed. The units must be removed before travel and should not be over-tightened or operated carelessly with power tools.

BAL X-Chock Wheel Stabilizer Two-Pack (28012)

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Key Features

• Two standard X-Chock stabilizers are included for tandem-axle applications.
• Fits tire spacing from 1 3/8 inches to 10 inches; wider spacing requires the X-Tended model.
• Opposing-force design works between adjacent tires to reduce fore-and-aft movement.
• Rust-inhibitive coating supports outdoor use and storage.
• Plated 3/4-inch ratchet wrench with a comfort bumper is included.

RV Use Cases

• Reducing movement in a parked tandem-axle travel trailer or fifth wheel.
• Supplementing leveling blocks, conventional wheel chocks, and stabilizer jacks at a campsite.
• Improving perceived stability when occupants walk through the RV.
• Using an optional compatible padlock as a minor theft deterrent while parked.

Practical Advantages and Limitations

Advantages:

• Compact units are easier to store than many ground-based stabilizing devices.
• Installation between the tires keeps the stabilizers within the trailer footprint.
• The two-pack equips both sides of a typical tandem-axle trailer.

Considerations:

• X-Chocks do not replace conventional wheel chocks and are not intended to level the RV.
• Fit is limited to 1 3/8-inch through 10-inch tire spacing.
• Tire pressure and spacing can change after travel, so tightness should be checked after the tires cool.
• Power tools can damage the mechanism if excessive torque is applied; BAL specifically warns against impact tools.

Best Practices

1. Chock first: Level the trailer and place conventional wheel chocks before disconnecting from the tow vehicle.
2. Measure the gap: Confirm that the spacing between tandem tires falls within the 1 3/8-inch to 10-inch range.
3. Install evenly: Position one unit on each side and tighten only enough to create firm opposing pressure.
4. Recheck when cool: Inspect tension after the tires cool because tire dimensions and pressure can change.
5. Remove before travel: Add X-Chock removal to the departure checklist and verify both units are stored.
6. Avoid impacts: Use the supplied wrench or a properly adjusted drill clutch; never use a cordless impact driver.

Inspector’s Note (RV Pro Solutions Insight)

If your tandem-axle trailer moves around whenever someone walks through it, X-Chocks can help make the campsite more comfortable. They fit between the tires and reduce that movement while you’re parked. The spacing between your tires helps determine which model will fit your trailer.

We almost learned the hard way that they don’t replace conventional wheel chocks. They’re great for reducing movement once you’re set up, but the regular wheel chocks are what keep the trailer from rolling. I’d make them part of the campsite setup after the trailer is chocked, leveled, and secured, then put their removal on the departure checklist before hitching up or operating the jacks.

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