JBP-T217.1 — Single adjustable tandem-axle T-Chock
View JBP-T217.1 productStromberg Tandem-Axle T-Chocks JBP-T217: Fit & Parts Guide
If your RV has two closely spaced tires on one side, Stromberg Carlson's T-Chock fits between them and expands to help reduce rocking when parked. It is not a tire-leveling ramp and does not replace ordinary wheel chocks used to restrain the trailer against rolling.
Select the single or double package
| Manufacturer part number | What comes in the package | Use |
|---|---|---|
| JBP-T217.1 | One adjustable T-Chock and a wrench | For one suitable gap between adjacent tandem tires |
| JBP-T217.2 | Two adjustable T-Chocks and a wrench | For two suitable gaps, such as the two sides of a tandem-axle trailer |
| JBP-T217.W (manufacturer reference) | Replacement wrench only | Service component; not a complete T-Chock |
Both T-Chock packages use the manufacturer's 2- to 17-inch tire-spacing range. Measure the clear distance between the facing tire surfaces at the intended installation height, not the axle centre-to-centre spacing. The number of chocks in the package does not change that range.
How the assembly works
1Forward trailer tire
One opposing surface for the chock's first pad.
2Adjustable T-Chock body
Expands between the two tires to apply stabilizing pressure.
3Rear trailer tire
Provides the other opposing surface; check the fit at the intended placement.
4Adjustment wrench
Used to expand or release the chock according to Stromberg's installation directions.
This simplified identification view does not represent an installation angle or tire-clearance template.
Why it differs from a wedge chock
A conventional wedge chock sits at the tire-ground contact area to help prevent the trailer moving. A T-Chock fits between two tandem tires to reduce movement through the suspension while occupants are inside. The T-Chock has a rust-resistant finish and includes a handle for placement and removal.
Matching T-Chock product photos
View JBP-T217.1 productJBP-T217.2 — Pair of adjustable tandem-axle T-Chocks
View JBP-T217.2 productCheck fit before purchasing
- Confirm the RV has a suitable tandem-tire arrangement. This is not a single-axle wheel chock.
- Measure the available gap between facing tires, with the trailer at its normal parked ride height.
- Check for nearby brake lines, fenders or other components that could interfere with the T-Chock.
- Use the wrench to set the stabilizing pressure specified in the instructions; do not use the device to lift or spread the axles.
- Remove every T-Chock before moving the trailer.
Factory documentation
See Stromberg's T-Chock model chart, illustrations and installation manual for the single, double and replacement-wrench models. The 2026 Stromberg Carlson catalog (printed page 12) also identifies the 2–17-inch operating span.
For a product that raises the tire for leveling, compare the JBP-C300/JBP-C302 curved leveler guide.
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