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Constant dunking and salt spray can destroy ordinary brake parts fast. These Demco 10" x 2-1/4" hydraulic drum brakes use galvanized backing plates, stainless steel springs, and zinc-plated wheel cylinders to stand up to water and corrosion. They’re marine-grade assemblies rated for axles up to 3,500 lbs and fit 14" to 15" wheels, making them ideal for boat or snowmobile trailers that see plenty of moisture and road salt.
If your surge actuator doesn’t have a reverse lockout, these brakes make backing up simple. The free-backing setup uses a spring system that overrides the brake cylinder when you reverse, keeping the shoes from catching on the drums. No dragging or wheel lockup—just smooth, easy movement when you need to back down a ramp or into a tight spot.
Frequent stops can wear out lesser pads quickly. The semi-metallic shoes on these assemblies are riveted to the brake shoes for added strength and durability. This design makes them less likely to warp or crumble under heat and pressure, giving you solid braking performance and longer service life.
These hydraulic drum brakes are built to match most standard hub-and-drum setups including Dexter and Lippert (LCI). The 4-bolt mounting flange has a 2-3/4" spacing between holes (4" diagonally), so they bolt right up with no redrilling or modifications. Each kit includes both left-hand and right-hand assemblies with adjuster plugs to keep dirt out of the mechanism.
Keeping brakes properly adjusted makes all the difference in how they stop. Each assembly includes access plugs so you can fine-tune the star gear with a flathead screwdriver or brake adjustment tool. A quick manual adjustment keeps your trailer braking smoothly and evenly season after season.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Perfect fit, I had them installed in 20 minutes. Super fast delivery.
After launching my boat, my left trailer wheel with drum brakes started locking up on my 2005 boat trailer. Thus, I decided to replace all brake and hub assemblies including both backing plates. I found all parts online from etrailer.com, and it was an easy repair.
I contemplated changing from drum to disc brakes at this time and get rid of the heavy hubs. However, I would have to replace the drum brake actuator with a higher pressure disc brake actuator, and I would have to run a wire to the reverse lights to keep the disc brakes from engaging when backing uphill.
Perfect fit for the trailer and works as described; able to back freely. Thanks etrailer!
Excellent service and knowledgeable staff great to deal with even
when I ordered the wrong item (my fault tried to be to cheap) there customer’s service team helped me get it right.!
Great replacement. Took off the old crud and cleaned up the mount. The new assembly bolted right on.
Before you purchase this "kit", check the individual prices for each side. After my purchase, I checked the individual prices and they were LESS than what I paid for the kit which included both sides. I had paid extra for quicker shipping. That did not happen, so Etrailer did refund my extra shipping costs. I did leave messages to two separate employees about the pricing problem, but received no response. The backing plates did install easily and do work well, as the only snag to the installation was that the last set they sold me had mounting studs, not bolts. So if you have no bolts on hand, you just need to tap out the old studs and drill the holes in the backing plate a hair larger and the old studs will work just fine. Even though these are marine grade, give them a very thorough rinse after being in salt water, because even with a good rinsing the salt will tear them up pretty quickly.
E-Trailer was very quick to get order shipped and lauren was excellent in customer service The only downfall was postal service was a little slow not bad but a little slow
I bought these right and left hydraulic brake assemblies for my boat trailer at a great price. I received my order one day earlier than promised. Etrailer.com really rocks to satisfy it’s customers. They provided an awesome tracking link for me to review my order’s shipping progress. This is the best tracking link that have ever experienced. Both complete brake assemblies fitted perfectly in place of my old assemblies. On each Brake assembly, I just had to remove the 4 mounting bolts from the axle flange and the hydraulic hose. Then install the new complete brake assembly, tighten the 4 mounting bolts and makeup the hydraulic hose.. This made this brake job a breeze! It was a pleasure doing business with you.
Thanks Etrailer.com!
Larkin
2/11/2021
Working great with no problems. Good product!
Very pleased with these folks, shipping was very quick and the parts are top notch.
Very impressed with the speed of shipping. Wow! Very happy with the parts.
Great quality, fast shipping!
All good. Great knowledgeable service on a older trailer. Only thing is doesn't come with mounting bolts for the brakes to trailer.
Although I haven't had a chance to put lots of miles on them, all the times I've used them they've performed well. So far no issues.i put these on a dual axle trailer with a 22' boat.
Daniel
9/3/2025
You know when something just works well.... Lol.... This has been my experience so far..... The design along with the function has been very good or without issue. I still havent put lots of use on these... More the occasional use. So nice to be able to back your boat in without issue! You guys have a repeat customer for sure!
This is my first time dealing with eTrailer. There videos, phone help, shipping, ease of tracking, and even packing were second to none. I did price shop and their prices were as low as anyone else. I very highly recommend them.
Hey George just got done installing your brake system on my Carkins dual axle boat trailer, what are nice product they went on beautiful no issues whatsoever extremely satisfied following is a picture of before and after , I just bought the boat and trailer and could not believe the condition of the brakes
24 yr old boat trailer brake cylinder finally fails. Brake shoes very thin. Every thing rusty and dirty.
I look at cylinders only, pads only, then found these! Everything new at reasonable price and delivered on time.
First trip found them to be smooth in operation. did not jam on at the last minute like the old ones did. THANKS etrailer.
Good quality and super easy install
Installation went well. Next is to evaluate durability & performance.
Haven't used them yet because I have to install a new actuator... however these were an exact fit and easy replacement on my 1981 Somerset boat trailer.
Robert C.
6/2/2021
Working fine after a year of use. Great product.
2000 ez loader trailer complete brake job. 2 axle torsion suspension. All 4 axles . I ordered 4 complete brake /backing plate assemblies and 4 new hubs. My complete order showed up on time afew days later. After I got the trailer and boat jacked up and started to take things apart I overlooked not ordering the transitional flexible brake lines that go from the hard lines into the back of the brake assembly. After traveling for 30 minutes to a hydraulic brake line shop to have lines made up they told me they did not have the fittings I really needed these lines to get this job done for the weekend to get the boat out on the water. So I called etrailer and was connected to Tiffany who I must say provided the best customer service I've ever experienced she worked with me on getting the correct items and set up next day rush shipping. She even personally made sure that my order got out the door and called me personally to let me know . There aren't too many companies that goes to that length to serve their customers. The next day at 10 a.m. the were delivered to my front door. (From half way across the United States ) . I was trilled to say the least. Thank you etrailer and a special thank you to Tiffany. In customer service for your personal attention and follow up regarding my order.
Steven
9/29/2019
The complete brake and line replacements our working great 1 year later. And I put alot of miles on my trailer both to salt water and fresh water.
Bolted right on and after a quick brake fluid flush we were ready to go. Galvanized was the way to go for sure. Nice and heavy duty!
We purchased these parts for a custom build trailer for hauling heavy tool boxes over steep grades. Since completion of the build about a year ago, we have been using it and put a lot of miles on it. The hydraulic surge brake system makes it worry free. We can tow it behind different vehicles of differing weights and wheel bases and not worry about setting trailer braking, it is very nice. We will continue to use etrailer for our trailer needs.
Victoria H.
1/30/2025
That is super neat Marc! Are you a mobile mechanic?
Marc
1/25/2026
Works great. A year later and several long trips with heavy loads and it has been flawless.
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Katrina D.
7/30/2024
Awe yeah, that does sound like a pain. First off, let me go ahead and get that extra shipping cost refunded back to you. As for the pricing, it looks like the pricing doesn't seem to add up due to the prices changing regularly for the individual parts. I have informed the proper department to look more into this and see what we can do to get it corrected for the future.