Identify BAL RV X-Chocks & Tire Locking Chocks by MPN

Not every BAL trailer wheel chock works in the same position. The standard X-Chock fits between closely spaced tandem tires, the X-Tended Fit version is intended for wider gaps, and BAL also makes a ground-level tandem locking chock and a design that wraps around a single tire. To choose the right product, begin with the trailer's axle layout, the actual tire clearance and whether you need a single chock or a set.

Measure the gap between the tires first

BAL wheel-chock identification chart

Measure the clear distance between facing tire sidewalls when selecting an X-Chock. The standard and X-Tended versions apply opposing force between tandem tires using an adjustable X-shaped mechanism, but they are not interchangeable across every tire gap. BAL also lists a zinc corrosion-inhibiting coating and a ratchet wrench for the X-Chock styles; its 28015 padlock is an optional accessory.

Ground-level tandem chock or single-tire locking chock?

28000A sits on the ground between the tires of a tandem-axle trailer. Its adjustable plates press against both tires, and BAL supplies a tension bar for additional pressure. Its 15¼–23⅛-inch range describes that model's adjustment span, not the same compact gap requirement used to select an X-Chock.

28020 is for one tire on a single-axle trailer. Turning the square centre bar moves the contact plates toward or away from the tire. It is a different mechanism from the between-tire X-Chock, and its listing's 10-inch dimension should not be mistaken for the X-Chock's tandem tire-gap range.

What to check before replacing a BAL chock

1. Confirm axle layout. Standard and X-Tended X-Chocks require two nearby tandem tires. The single-tire 28020 has a separate design.
2. Measure the actual tire gap. Compare the manufacturer's 1⅜–10-inch standard X-Chock range with the X-Tended model's 10–17-inch range. Check clearance around fenders, suspension and tire sidewalls.
3. Check pack quantity. 28010 and 28014 are singles; 28012 and 28024 supply pairs. One package is not necessarily enough for your preferred trailer setup.
4. Inspect the mechanism. Check threads, ratchet engagement, arm alignment and contact surfaces. Bent, seized or severely corroded parts should not be relied on for stabilization.
5. Use the correct tool and sequence. BAL recommends the supplied hand ratchet; an uncontrolled impact driver can damage the mechanism. Secure the trailer using conventional wheel chocks first, then install the stabilizer according to the model instructions.

Shop matching BAL wheel chocks

The exact part-number cards below link to UsedRVParts.ca. Check the condition and availability shown on each product listing. The store offers both brand-new and used RV parts; viewing and pickup of eligible used stock in Kelowna are by appointment.

BAL 28010

Standard X-Chock — single

Narrow tandem-tire spacing; ratchet included

Check this part and condition

BAL 28012

Standard X-Chock — pair

Standard-spacing tandem tires; plated ratchet supplied

Check this part and condition

BAL 28014

X-Tended Fit X-Chock — single

Wide-track tandem spacing; ratchet included

Check this part and condition

BAL 28024

X-Tended Fit X-Chocks — pair

Pair of wide-track X-Chocks; ratchet supplied

Check this part and condition

BAL 28000A

Standard ground-level tandem chock

Ground-mounted locking assembly with tensioning bar

Check this part and condition

BAL 28020

Single-axle tire locking chock

Square centre adjustment bar moves contact plates around one tire

Check this part and condition

Other wheel-stabilizing options

For designs that differ from BAL's X-Chock family, see our Camco tandem wheel stops guide and under-tire wheel chock identification page. The under-tire wedges address a different securing function from an X-Chock stabilizer.