NEW 4pcs 12-1/4x5" 12K 15K Electric Backing Plate Trailer Brake Fits Dexter 5"

Electric Backing Plate Trailer Brake for Dexter

This 4-piece set of 12-1/4 x 5 inch electric backing plates with 12K and 15K ratings is a direct-fit trailer brake assembly for Dexter 5 inch axle applications.

Overview

These electric backing plates give you a complete brake assembly for heavy-duty trailer axles, combining the backing plate, shoes, and magnet into one bolt-on unit. The 12K and 15K ratings make them suitable for demanding towing loads where stopping power matters most. Each plate is designed as a replacement for Dexter 5 inch axles, so installers get a straightforward swap rather than a rebuild.

Built For Performance

• 12-1/4 inch diameter by 5 inch plate size for large trailer drums
• Electric actuation with an integrated magnet for responsive braking
• Rated for 12K and 15K trailer weight classes
• Four-piece set so both sides of an axle can be serviced at once
• Bolt-on backing plate design for a direct replacement fit

Fits These Machines

• for Dexter 5 inch axle trailer brake assemblies
• for Dexter 12K trailer axles
• for Dexter 15K trailer axles

On-The-Job Use

• Replacing worn or seized brake assemblies on equipment trailers
• Servicing dump trailers and flatbeds used for hauling machinery
• Refreshing braking on gooseneck and fifth-wheel trailer setups
• Fleet maintenance where multiple trailers share the same axle size

Specs At A Glance

Good To Know

Q: Do these fit any 12K or 15K trailer axle? A: They are built for Dexter 5 inch axles, so measuring your spindle and bolt pattern before ordering is the safest approach. Other axle brands may use a different flange layout even at the same weight rating.

Q: Can I install these myself? A: Yes, they are a bolt-on assembly that replaces the existing backing plate, though bleeding and adjusting the brakes afterward is recommended. If you are not comfortable with brake work, a qualified trailer shop should handle the installation.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.