Match the part number, measurements and connection points that apply to your trailer.
| Hub Face | Measure hub face to hub face. |
|---|---|
| Spring Center | Measure mounting centers and confirm perch configuration. |
| Capacity | Match the required axle rating. |
| Brakes | Confirm brake type and flange configuration. |
This hydraulic brake backing plate kit includes one left-hand and one right-hand self-adjusting brake assembly for heavy-duty trailer axles. Designed for 12,000 lb to 16,000 lb axle applications using 12.25" × 5" brake shoes.
Commonly used on Dexter and Lippert (LCI) hydraulic drum brake systems.
12.25" × 5" hydraulic brake assemblies are typically found on 12K–16K heavy-duty trailer axles and use a 7-bolt mounting flange. These are forward self-adjusting (FSA) assemblies designed for drum systems.
Always confirm brake shoe width, axle rating, mounting bolt pattern, and drum compatibility before ordering. Not compatible with AL-KO axles.
| Specification | Detail |
| Brake Type | Hydraulic Drum Brake Backing Plates |
| Shoe Size | 12.25" × 5" |
| Adjustment Type | Forward Self-Adjusting (FSA) |
| Axle Rating Range | Typically 12,000–16,000 lb |
| Mounting Pattern | 7-Bolt Backing Plate Mount |
| Compatibility | Dexter and Lippert (LCI) Axles |
| Not Compatible With | AL-KO Axles |
These brakes require a dust shield for proper installation. If your existing dust shield is damaged or missing, replacement is recommended.
Verify specifications before installation.
Selected from R&P customer feedback for Trailer Axle / Running Gear products and related trailer service.
“Got me the axle I needed right away with custom spring perch setting.”
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