9" x 1-3/4" Trailer Hydraulic Brake Assembly
9â x 1.75â hydraulic trailer drum brake comes complete with shoes, springs and hydraulic cylinder ready to bolt on. The maximum capacity of one 9" hydraulic trailer drum brake kit is 1200 kg for 15â or 16â wheel, and 1450 kg is for 13â or 14â wheel. 9â hydraulic backing plate mounts on standard 4 bolt flange. 9â trailer brake assemblies are most often used to tow boat trailers and most RVs in saltwater.  The 9 inch hydraulic brakes need less ongoing maintenance than 9 inch mechanical brakes, but be more expensive to install or replace.
Features
  E-coated backing plates resist wear and corrosion.
  These 9â hydraulic trailer brakes exchange with most axle brands including AL-KO and many standard brakes.
  Dimension: 9 inch x 1 3/4 inch             Â
  Mounting Flange Bolt Pattern: 4 bolt
  9â x 1 3/4" Brake Shoe Kit x 1
  Wheel Cylinder x 1
  Short spring x 1