The 31-5111-HF is a fully assembled right-hand hydraulic brake backing plate designed for 7,000 lb trailer axles with 12″ x 2″ drum brakes. This complete brake backer includes the wheel cylinder, shoes, and all internal components pre-installed for fast, bolt-on replacement. Ideal for trailers equipped with surge brake systems, this backing plate offers reliable stopping power and long-term durability.
Features:
- Complete right-hand hydraulic brake assembly
- Pre-installed brake shoes, springs, and wheel cylinder
- 12″ x 2″ brake size – fits 7K-rated axles
- Designed for use with surge or hydraulic brake systems
- Bolt-on replacement for Dexter®, Lippert®, and other 7K axles
Specifications:
- Part Number: 31-5111-HF
- Axle Rating: 7,000 lbs
- Brake Size: 12″ diameter x 2″ width
- Side: Right-hand (passenger side)
- Mounting Flange: 5-bolt pattern
- Brake Type: Hydraulic (free-backing)
- Includes: Backing plate, shoes, springs, wheel cylinder (fully assembled)
- Application: Utility, dump, equipment, and livestock trailers
Fitment:
- Fits 7K trailer axles with 12″ x 2″ hydraulic drum brakes
- Common on trailers with Dexter® or compatible brake systems
- Use with corresponding LH brake: for full axle replacement
