Demco Hydraulic Brake Kit - Free Backing - Galvanized - 12" - Left/Right Hand Assemblies - 7K

Demco Hydraulic Brake Kit - Free Backing - Galvanized - 12" - Left/Right Hand Assemblies - 7K

Item # 42029-28

lowest price pledge

Retail:$176.20

Our Price: $128.89

You Save: $47.31
Trailer Brakes

This item qualifies for Free Shipping

Shipping Weight: 30 lbs

Quantity: 
In Stock, Ships Today
42029-28 - 7000 lbs Axle Demco Hydraulic Drum Brakes
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

Customer Photos


  • Hydraulic Drum Brakes
  • 7000 lbs Axle
  • 12 x 2 Inch Drum
  • 14-1/2 Inch Wheel
  • 15 Inch Wheel
  • 16 Inch Wheel
  • Demco
  • Free Backing
  • Brake Set
Free-backing, driver's-side and passenger's-side brakes won't engage when you reverse, even if your actuator is activated. Galvanized steel resists rust, making the assemblies great for boat trailers. Fit 14.5" to 16" wheels. Lowest Prices for the best trailer brakes from Demco. Demco Hydraulic Brake Kit - Free Backing - Galvanized - 12" - Left/Right Hand Assemblies - 7K part number 42029-28 can be ordered online at etrailer.com or call 800-298-8924 for expert service.


  • All Info
  • Reviews (4)
  • Q & A (0)
  • Photos
  • Why etrailer?

Demco Trailer Brakes - 42029-28

Free-backing, driver's-side and passenger's-side brakes won't engage when you reverse, even if your actuator is activated. Galvanized steel resists rust, making the assemblies great for boat trailers. Fit 14.5" to 16" wheels.


Features:

  • Marine-grade hydraulic drum brake assemblies are great for boat trailers
    • Designed for use with surge-type trailer brake actuators
  • Sturdy, corrosion-resistant steel construction
    • Galvanized backing plates
    • Stainless steel spring hardware
    • Zinc-plated wheel cylinders
  • Free-backing design lets you back up without engaging the trailer brakes, even if the actuator is activated
    • Riveted, fall-away brake shoes only anchor on drums when brakes are engaged as trailer is moving forward
  • Periodic manual adjustment required
  • Adjuster plugs (included) cover access holes to keep dirt and grime out of the assemblies and off of the shoes
  • Left-hand (driver's-side) brake assembly and right-hand (passenger's-side) brake assembly included
    • Mounting bolts and hardware sold separately


Specs:

  • Dimensions: 12" diameter x 2" wide
  • Mounting flange bolt pattern: 5 bolt
  • Wheel size: 14-1/2", 15", and 16"
  • Axle rating: up to 7,000 lbs
  • 1-Year warranty


Note: Because free-backing brakes are designed to eliminate nearly all friction between the brake shoes and the drum when you are driving in reverse, a trailer breakaway kit will not be effective should your trailer disconnect from your tow vehicle while you are backing up.


Free-backing brakes let your trailer move in reverse without the brakes being activated by your surge actuator. These brakes are needed if your actuator does not have a reverse lockout, which is a mechanism that ensures that the actuator does not activate when your rig moves in reverse.


Demco Free-Backing Brakes with Fall-Away Shoes

Each of these Demco free-backing brake assemblies has a fall-away shoe that is designed to provide full braking action when your trailer is moving forward and to supply only limited friction when the trailer is moving in reverse. This is largely due to the incorporated dual springs at the shoe's pivot point. (One spring sits on either side of the shoe lever, so only a single spring is visible when looking at the brake assembly.)


Demco Free Backing Brake Labeled Diagram - Right Hand Assembly

When your rig is moving forward and you engage the trailer brakes, each fall-away shoe expands normally, with the leading edge of the shoe catching the drum. This occurs because the plunger on the hydraulic cylinder pushes on the shoe lever, forcing the leading edge of the brake shoe into the drum. Once that edge catches, the dual springs at the shoe's pivot point facilitate braking by forcing the rest of the shoe to pivot into the drum. The action of the shoe against the drum provides the friction required for braking.


When you are driving in reverse, however, the hydraulic cylinder and the springs work against one another. Even though the plunger pushes on the shoe lever, the dual springs of the fall-away shoe overcome the pressure from the brake cylinder, keeping the leading edge from catching on the drum and ensuring that the shoe does not fully pivot into the drum. Because the shoe makes only slight contact with the drum, just enough friction is generated so that only a minimal amount of braking occurs when you are in reverse.



SB42029M Demco Galvanized 12" Marine Trailer Brake Assembly - Freebacking - Left Hand

SB42028M Demco Galvanized 12" Marine Trailer Brake Assembly - Freebacking - RightHand





This Product Fits The Following Vehicles

2019 - 2019 Eclipse Iconic 5W Toy Hauler 2814SG

2016 - 2017 Forest River Cedar Creek Fifth Wheel 34RE

2015 - 2016 Forest River Cedar Creek Fifth Wheel 34RL

2017 - 2017 Forest River Cedar Creek Fifth Wheel 34RL2

2018 - 2018 Eclipse Iconic 5W Toy Hauler 3518IKG

2017 - 2018 Forest River Cedar Creek Silverback Fifth Wheel 35IK

2010 - 2011 Forest River Cedar Creek Silverback Fifth Wheel 35K

2015 - 2015 Forest River Cedar Creek Silverback Fifth Wheel 35QB4

2013 - 2013 Forest River Cedar Creek Fifth Wheel 36B4

2017 - 2017 Forest River Cedar Creek Fifth Wheel 36CK2

2013 - 2016 Forest River Cedar Creek Fifth Wheel 36CKTS

2013 - 2013 Forest River Cedar Creek Fifth Wheel 36MDX

2013 - 2013 Forest River Cedar Creek Fifth Wheel 36RE

2015 - 2016 Forest River Cedar Creek Silverback Fifth Wheel 37BH

2018 - 2019 Forest River Cedar Creek Silverback Fifth Wheel 37FLK

2016 - 2019 Forest River Cedar Creek Silverback Fifth Wheel 37MBH

2016 - 2018 Forest River Cedar Creek Silverback Fifth Wheel 37RL

2014 - 2016 Forest River Cedar Creek Fifth Wheel 38CK

2017 - 2017 Forest River Cedar Creek Fifth Wheel 38CK2

2016 - 2016 Forest River Cedar Creek Champagne Fifth Wheel 38EL

2015 - 2016 Forest River Cedar Creek Fifth Wheel 38FB2

2017 - 2017 Forest River Cedar Creek Fifth Wheel 38FBD

2013 - 2015 Forest River Cedar Creek Fifth Wheel 38FL

2015 - 2015 Forest River Cedar Creek Fifth Wheel 38RD

2014 - 2014 Forest River Cedar Creek Fifth Wheel 38RE





Customer Reviews

Demco Hydraulic Brake Kit - Free Backing - Galvanized - 12" - Left/Right Hand Assemblies - 7K - 42029-28

Average Customer Rating:  5.0 out of 5 stars   (4 Customer Reviews)

Free-backing, driver's-side and passenger's-side brakes won't engage when you reverse, even if your actuator is activated. Galvanized steel resists rust, making the assemblies great for boat trailers. Fit 14.5" to 16" wheels.

- 42029-28
by:

I contacted your company to discuss replacing the discontinued brakes on my Trailmaster boat trailer and your Tech person was knowledgeable and accurate with his suggestions. Your website was great, and the videos you have available are perfect. I ordered that day, and I have never had better delivery. The Brake Kits I ordered look fantastic, and they installed very easy with no issues. Excellent product and Great informed people, I'll be back. Thank You. Keep up the great work. 558145



- 42029-28
by:

Older boat trailer had a wheel cylinder fail and fluid everywhere. These were easy to bolt on and a perfect replacement for what I had. This was not my first order from etrailer and I would recommend to anyone! Extremely fast shipping even when I just chose the regular, free method. 564521



- 42029-28
by:

Excellent quality and fit. 639731



- 42029-28
by:

Great fit. My 7000 lb boat has brakes a gain 637625


4
4

Ask the Experts about this Demco Trailer Brakes
Do you have a question about this Trailer Brake?




    • Why etrailer.com?

      At etrailer.com we guarantee:

    • Highest quality trailer brakes for the best price.

      Our Lowest Price Pledge ensures you will never overpay for the parts you need.
    • Real product know-how.

      We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
    • Most detailed, accurate trailer brake information available.

      Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
    • Installations, made easy.

      We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
    • Fast shipping.

      Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
    • Personalized service for life.

      We provide one-on-one, personalized service from the ordering process through the life of your product.
    • Trusted since 1946.

      We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
    • Returns Policy

      Satisfaction Guarantee
      Need to return an item? No problem. Please read our Returns Policy for more information.

    Info for this part was:

    Edited by:
    Lindsey S
    Written by:
    Alexander C

    At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.