This Listing is for (1) Right Hand Passenger Side Hydraulic Backing Plate for your Drum Brake System. This Backing plate mounts on your standard 4 Hole Brake Flange ( 2 7/8" Center To Center Hole side by side, 4" Center to Center Diagonal). These are Marine Grade Backing plates, ideal for both fresh and saltwater boat trailers. The shoe dimensions on this drum brake cluster is 10" x 2 1/4", which is the standard for 5 Lug Brake Drum Hubs on a 3,500 lb Trailer Axle. These drum brake backing plates are free backing, so you will not need a reverse lockout solenoid or bypass valve to reverse your trailer. This Brake Backing Plate does not include mounting bolts or nuts. The clusters are pre-assembled just as pictured. Having a properly working trailer brake system is not only important for safe and secure towing, but is also a legal requirement in most states. Drum Brake backing plates will keep you safe and legal!
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