My 2017 galvanized shorelander trailer starboard brake seized. I guess at 5 years the salt water got to it even though religiously flushed after each use. Funny I used trailer a month ago and no issues, didn't even put boat in water. This Saturday I smelled brakes, within 3 miles the heat expanded the wheel bearing grease to the point it blew the rubber cap off the buddy bearing and then grease about 4 feet out, lol. I beat the piston back in caliber that is where I found the steel/chrome piston heavily corroded under the rubber boot which I assume is to prevent water from corroding the piston. I put the brake lock-out tab in place on tongue and secured it with a C-clamp so I could get the trailer back to home.
Looks like 3 calipers are available. Zinc plated with chrome piston (don't use) aluminium caliper with stainless steel piston (bingo) all stainless steel $$$$
Make sure you are familiar with your trailer brakes and how to bypass if on a trip. As far as calipers your guess is as good as mine as to when they seize. Caliper looked perfect with zero rust.
Just an FYI.
Looks like 3 calipers are available. Zinc plated with chrome piston (don't use) aluminium caliper with stainless steel piston (bingo) all stainless steel $$$$
Make sure you are familiar with your trailer brakes and how to bypass if on a trip. As far as calipers your guess is as good as mine as to when they seize. Caliper looked perfect with zero rust.
Just an FYI.