Though we do not have any types of parts list for trailers, I did take a look at the specs for your 2013 Keystone Cougar 32RBK travel trailer and it looks like the GVWR of the rig is 9,000 lbs. Electric brakes that may be a fit for you are the Electric Trailer Brake Kit # AKEBRK-7-SA, which are 12" and rated for axles with a capacity between 5,200 lbs and 7,000 lbs. They have a 5-bolt mounting flange and fit 14.5" to 16.5" wheels. These self-adjusting brakes need mounting hardware # BRKH12... view full answer...