Electric Trailer Brake Assemblies — 10,000 lb Axle
12-1/4" × 3-1/2" • 5-Bolt • Rockwell Compatible
SKU: 77-1210RW-PAIR
Complete left- and right-hand electric brake assembly pair for 10,000 lb trailer axles. Designed for axles using Rockwell-style brake mounting patterns.
This set includes fully assembled backing plates with shoes, magnets, springs, and adjuster hardware installed — ready to mount to an existing brake flange.
What’s Included
- (1) Left-hand electric brake assembly — driver side
- (1) Right-hand electric brake assembly — passenger side
- Fully assembled backing plates
- Brake shoes, magnets, springs, and adjuster hardware installed
Specifications
| Axle Rating |
10,000 lb |
| Brake Type |
Electric |
| Brake Size |
12-1/4" × 3-1/2" |
| Mounting Pattern |
5-bolt brake flange |
| Compatibility |
Rockwell-style axles |
| Mounting Studs |
1/2"-20 thread (pre-installed) |
| Hardware Included |
No |
Fitment Note: Designed for 10K axles using Rockwell-compatible 5-bolt brake flanges. Verify brake size, flange pattern, and mounting hardware requirements before installation.
77-1210RW-PAIR 4738-L 4738-R 10k electric brake 12.25 x 3.5 electric brakes rockwell brake assemblies trailer brake backing plate pair