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M-Parts 1 Pair of Self-Adjusting 12-1/4 X 3-3/8 (12.25 X 3.375 ) Electric Trailer Drum Brake Assemblies Kit for 8,000 Lbs (8K) Trailer Axles; 1 LH + 1 RH
Self-Adjusting Electric trailer brake assemblies that measure 12-1/4 X 3-3/8 with brake pads designed for utility trailers, travel trailers, horse trailer, motorcycle trailers, and more. These brakes are rated for 8,000 lbs and have a 4-bolt mounting flange bolt pattern. This product is compatible with most manufacturers and comes with a limited 1-year warranty. 2 pack (1 left and 1 right) or 

Price is $336.00
Price: $335.99