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Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K
(54 reviews)
Price: $128.43
In Stock
Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K
Item # AKFBBRK-7
Our Price: $128.43
This item qualifies for Free Shipping
In Stock, Ships Today
- All Info
- Reviews (54)
- Q & A (23)
- Videos (2)
- Photos
- Why etrailer?
etrailer by AxleTek Trailer Brakes - AKFBBRK-7
- Hydraulic Drum Brakes
- 5200 lbs Axle
- 6000 lbs Axle
- 7000 lbs Axle
- 12 x 2 Inch Drum
- 14-1/2 Inch Wheel
- 15 Inch Wheel
- 16 Inch Wheel
- etrailer
- 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. Automotive-grade friction pads and e-coated backing plates are long-lasting. Fit 14.5" to 16.5" wheels.
Features:
- Hydraulic drum brake assemblies are designed for use with a surge-type trailer brake actuator
- Free-backing design lets you back up without engaging the trailer brakes, even if the actuator is activated
- Fall-away brake shoes only anchor on drums when brakes are engaged as trailer is moving forward
- Automotive-grade friction material is molded to brake shoes
- Pads are fully bonded - not riveted - to shoes for long life and more braking torque
- Less chance of cracking and crumbling that can lead to mechanical lockup, thanks to tapered edge and circular grinding
- Periodic manual adjustment required
- Fine-tooth brake adjustment gears allow for a more precise setting
- E-coated backing plates resist wear and corrosion
- Single plunger design
- 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 (BRKH12) sold separately
- QAI and CSA certified
Specs:
- Application: most standard hub-and-drum assemblies, including Dexter, Lippert (LCI), and AL-KO
- Dimensions: 12" diameter x 2" wide
- Mounting flange bolt pattern: 5 bolt
- Wheel size: 14-1/2", 15", 16" and 16-1/2"
- Axle rating: 5,200 lbs, 6,000 lbs, and 7,000 lbs
- Limited 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 Brake Assembly
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.
Each of these free-backing hydraulic brake assemblies has a fall-away shoe, which provides full braking when your trailer is moving forward, but supplies only limited friction when the trailer is moving in reverse. During normal forward braking, the fall-away shoe expands to catch your brake drum. When driving in reverse, however, the fall-away shoe's extra spring will overcome the pressure from the brake cylinder. This keeps the leading edge from catching on the drum, so the shoe will not fully pivot into the drum. This exerts a smaller amount of friction, just enough to provide a minimal amount of braking when in reverse.
These trailer brake assemblies act as part of your trailer's hydraulic braking system. A hydraulic trailer brake actuator is required for these brakes to function.
Thoroughly Tested for Safety
These brake assemblies meet the requirements for certification by the Canadian Standards Association (CSA). The CSA creates standards, which when complied with ensure a safe and quality product. These brake assemblies underwent extensive testing to measure stopping distances when braking. These brakes have also been tested by QAI for braking performance in a complete automotive setup and under real-world conditions to provide the most realistic scenario for the everyday driver.
Automotive-Grade Friction Material
Each shoe on these brake assemblies is lined with automotive-grade friction material for improved stopping performance and longevity. The friction material is fully bonded onto the surface of the brake shoe. This lining is custom-molded for a perfect fit. The edges are tapered to ensure long-lasting performance. This taper, along with the circular grinding that the lining undergoes, helps to prevent cracking and crumbling. This durability helps to prevent mechanical lockup, which can occur when brake shoes are excessively worn or broken.
The friction material is also SAE-N certified, which means that it is an environmentally safe product that complies with California and Washington regulations regarding the composition of brake pads. As a result, this material not only provides high-performance braking that can endure the test of time, but it is also environmentally friendly and safe for use throughout the United States and Canada.
B12H-51 AxleTek 12" X 2" LH Hydraulic Brake Assembly - Free Backing - Drivers Side - 5.2K, 6.0K, 7.0K Axles - E-Coat
B12H-52 AxleTek 12" X 2" RH Hydraulic Brake Assembly - Free Backing - Passengers Side - 5.2K, 6.0K, 7.0K Axles - E-Coat
Video of Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
etrailer Uni-Servo Free Backing Hydraulic Brake Kit Installation
etrailer Trailer Brakes - Hydraulic Drum Brakes - AKFBBRK-7 Review
Video Transcript for etrailer Uni-Servo Free Backing Hydraulic Brake Kit Installation
Speaker 1: Today we're gonna be taking a look at the hydraulic brake kit U-Servo 00:00:02 free backing 12 inch left and right hand brake assemblies for five and a half thousand to seven thousand pounds. That's gonna be part number AKFBBRK-7.So here's what our brake assembly's gonna look like. The biggest benefit to our brake assembly here is that it is an entire assembly. We're not gonna have to worry about getting the hardware kit, a wheel cylinder, or anything else. As well as putting on the pads, they are hydraulic brake assemblies, which means they're gonna work with surge-type brake actuators.What's nice about these assemblies is that they have a free backing design. And what that means is, it's gonna let you back up without engaging the brakes, even if the actuator is activated.The fall-away brake shoe is only gonna anchor on the drum when the brakes are engaged, as the trailer is moving forward.The pads are gonna be fully bonded into the shoes and not riveted, which means that they're gonna give it a longer life and more of a bite on those brakes.The tapered edge at the bottom of our pad is gonna help prevent any kind of cracking and crumbling that can lead to a mechanical lock-up.Our brake assemblies are gonna have a fine tooth adjustment gear, and that's gonna allow us to fine tune our brakes, but it is a manual adjustment, so we are gonna have to check our brakes and adjust them periodically.There is gonna be a plug on the back that's gonna help keep out all the dirt and debris from getting inside, and this is right where we're gonna make our adjustments at.Now, the mounting flange bolt pattern is gonna be a five bolt, and it's gonna fit wheels 14 1/2, 15, 16, and 16 1/2 inch.Our brake assembly is gonna work with axles that are rated at 5,200, 6,000, and 7,000 pounds.Now, this is gonna include the left and right hand assemblies, so to start out, we're gonna go ahead and remove our drums so we can pull off this cap.
Just take a rubber mallet, and we're gonna tap it until it can come off. Put the cap aside for now. Now, on the top of the nut here, we're gonna clean some of the grease off, because there's gonna be a retaining clip that's holding it in place. Just take a shop towel and wipe off some of the excess grease so we can find that retaining clip.You're gonna want to grab a flathead screwdriver. There's gonna be a tab that's gonna be in between the two channels here, on the nut itself.
We're gonna bend that tab down, so that we can actually turn the nut and take it off. Now, you want to be careful, because our brake assembly is not gonna come with a retaining nut or washer, so you want to keep this hardware so we can re-install it.Next, we're gonna grab a pair of channel locks and we're gonna grab the nut and just loosely turn it so it'll unlock it. Then we can take it off by hand the rest of the way.Then we can pull off that retaining plate. We're gonna pull this off and set it aside, and then if you need to, again, grab a flathead screwdriver and we're gonna pull that washer off that's right behind it. So we're gonna grab the back of the hub, slowly pull it back, and we'll set the hub aside, as well.So what's gonna be holding our assembly in place is gonna be these nuts right here.
There's gonna be a total of five of them going around the axle shaft. We're gonna be using a 9/16 socket to remove them. Now, again, you want to hold onto the hardware that comes off, because our new brake assembly is not gonna come with hardware.And with the hardware removed, we are gonna have one last point that we're gonna have to pull off before we can pull the assembly out, and that's gonna be right here, where the brake line is actually attached.You need to tilt the assembly out so you can get a wrench in there to loosen that fitting.So we can take our new assembly. We're gonna slide it over the studs. Then we can reinstall those lock washers and nuts back in place.Just gonna put these in there hand tight for now, and then we can come back and tighten them all down.
With all the bolts in hand tight, I'm gonna come back and I'm gonna torque them down.So with this brake assembly in place, we're gonna go ahead and repeat that for the other remaining positions.And that will finish up your look at the hydraulic brake kit for the left and right hand side. And that's gonna be part number AKFBBRK-7.
Customer Reviews
Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K - AKFBBRK-7
Average Customer Rating: 4.9 out of 5 stars (54 Customer Reviews)
Free-backing, driver's-side and passenger's-side brakes won't engage when you reverse, even if your actuator is activated. Automotive-grade friction pads and e-coated backing plates are long-lasting. Fit 14.5" to 16.5" wheels.
- AKFBBRK-7
by: Antoine08/13/2019
Worked perfectly. 686936
- AKFBBRK-7
by: Henry05/04/2019
Got the 12" backing plates, have yet to install them. My past experience with Etrailer has been excellent! I am rebuilding a large boat trailer and they have had everything I needed to complete the job with great videos on how to install each component. They are the gold standard for an online business! 637918
- AKFBBRK-7
by: Roy F.12/03/2018
The product was very good with minor shipping damage. I believe it would be better to ship in one box per axle instead of four backing plates in one box, that is where the damage came from. Your people were very friendly,& easy to work with. The product was exceptional quality. 588009
- AKFBBRK-7
by: Emerson09/18/2019
Very good products no problems thanks for everything 711189
- AKFBBRK-7
by: Pat05/03/2019
Quick delivery, good price, perfect match and fit. Thank you! 636979
- AKFBBRK-7
by: Phil02/07/2019
Ordering was simple, shipping as promised, fit was perfect and products are still in use. Couldn't ask for more. 603166
- AKFBBRK-7
by: Joe01/22/2019
perfect fit 599524
- AKFBBRK-7
by: Scott Augustine07/24/2018
Very helpful on the phone and everything ordered fit perfectly! Thanks for all the help. 545610
- AKFBBRK-7
by: Jon07/18/2018
Brake parts were awesome quality.Web site was easy to navigate.Shipping was fast. I highly recommend and will do business again! 543161
- AKFBBRK-7
by: Eric04/23/2018
Great service 499753
- AKFBBRK-7
by: Michael12/11/2017
GOOD PRICE , EXACTLY WHAT I NEEDED , TIME SAVER. 459163
- AKFBBRK-7
David V - 11/01/2018
45267
by: Dave11/01/2017
My trailer brakes arrived on schedule completely assembled and ready for installation. In 2 hours I had new trailer brakes on my boat trailer working great. Thanks for the great service! 448158
Comments
My trailer brakes are still working great. Havent had to give this repair a second thought. Thanks
David V - 11/01/201845267
- AKFBBRK-7
by: Jake S.05/24/2017
Detailed description and fast delivery 384457
- AKFBBRK-7
by: bryan cat hey04/14/2017
perfection from start to finish 367477
- AKFBBRK-7L
by: Gregg10/08/2018
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Changing out the brakes on my boat trailer was actually much easier, and cheaper thanks to these guys, than I expected. etrailer.com had every single part I needed and the videos explanations made selection easy. Will bookmark this site for sure. Cheers 572626
- AKFBBRK-7-D
by: Gene L.10/05/2017
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Product arrived, looks great. will be installing on a Workforce man lift. Thank you for quick delivery. 439711
- AKFBBRK-7-D
by: Mikeockridge09/09/2017
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
The crew over etrailers work their butt off I ordered the wrong 12 inch backing plate with shoes it was already loaded on the truck they went out and pulled it from the truck and did not charge me and reordered and sent the right product it a ride fast 430470
- AKFBBRK-7-D
by: Reuben07/15/2018
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
You guys (Meghan this time) are always incredible. Thank you! 541887
- AKFBBRK-7L
by: Jeffrey C.05/24/2016
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Everything was there. All assembled. The only thing I did before I mounted the backing plates was to remove the adjuster wheel and take it apart and put some marine grease on the threads and under the cap. Other than that, I just bolted it on the axle, hooked up the brake line, and I was good to go. That easy. 251403
- AKFBBRK-7-D
by: Jim P.06/16/2017
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Easiest brake job I ever did! Complete assembly bolted to the trailer in the original position. No fussing around. Connected brake line, bled brakes and was rolling again. With free shipping, I couldn't go wrong. 394802
- AKUBRK-7
by: Greg T.09/24/2017
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Parts arrived on the date scheduled, the shipper for some reason couldn't find an address that they had delivered to before, this was not any fault of etrailer.com. All parts fit exactly as they should have and now hopefully I will not have to fix someone else's neglect again, as shown in some of my pics. But if I do I will use etrailer.com. Big thanks to Shawn for help above and beyond. 436057
- AKFBBRK-7-D
by: Brent L.05/03/2017
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Great on phone help….. OK was very impressed that the 2 ladies I talked with on 2 different calls really knew their STUFF. Very impressed and ordered on Sat. del. on Wed. with tracking sent to me. Will be back when I break these in with new salt water. 375750
- AKFBBRK-7-D
Jeff B - 04/16/2018
37317
by: Jeff B.04/13/2017
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
I Purchased hydraulic drum Brakes - Uni-servo backing plates form Lisa D at etrailer. I could not be more pleased. The items arrived when they were supposed to and were exactly what they were supposed to be. Lisa was very professional and knowledgeable, and followed up through email. I needed the items fast, and even after priority shipping, the cost was less than i could have found elsewhere. I will use etrailer again should the need arise. 366544
Comments
I am very pleased with the brake system. It is installed and functioning very well on a heavy duty equipment trailer which is often called upon to haul in excess of 10,000
Jeff B - 04/16/201837317
- AKUBRK-7
by: Fritz12/21/2019
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
Customer service is outstanding!! Excellent value!! I wish there was an etrailer store near me!!! 733700
- AKFBBRK-7-D
by: Daniel10/17/2019
Review from a similar etrailer FreeBack 12 Inch in Trailer Brakes
could not be happier!!! 718091
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view full answer... - Recommended Brake Assemblies for 31 Foot Travel Trailer with Tandem AxlesFor axles that are roughly 5,000 lbs each base on your 10,000 lb rating, you will need 12 inch brake assemblies for your 31 foot travel trailer. I recommend the Electric Trailer Brake Kit - Self-Adjusting - 12" # AKEBRK-7-SA. If you have hydraulic brakes, you will want # AKFBBRK-7 instead which is a free-backing brake assembly. These assemblies both work with the standard 5 bolt mounting flange on axles of this capacity level. If you meant that each axle was rated for 10,000 lbs,...
view full answer... - Surge Brake Actuator Compatibility with Free Backing Brakes and Longer DimensionsYour Demco Actuating Coupler # 8605001 to replace your Atwood coupler is a great choice even though it is 5 inches longer. As long as you have the 3 inch wide channel tongue and the 6,000 lb capacity is adequate for your trailer it will work just fine. The length of the coupler won't really change the tongue weight or anything else, so no need to be concerned. It will work perfectly with free-backing brake assemblies like # AKFBBRK-7 which are made to engage the same way as usual...
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- 12 inch Brake Assembly Recommendation for Trailer with Hydraulic BrakesWe carry 12 inch trailer brake assemblies for hydraulic setups. For a set that includes both sides we have the # AKFBBRK-7 which will be a great option. This kit is designed for axles with capacities between 5.5k and 7k.
view full answer... - Timbren Axle Less Kit Recommendation for Sea Ray Dual Axle Boat TrailerWe have Timbren Axle Kits like part # ASR5200S01 that are rated for 5,200 lbs which would work great on a 10k tandem trailer like what you have. Then for hubs we have the part # 8-201-5UC3-EZ which fits the spindles of this axle. Then for free-backing hydraulic drums we have the part # AKFBBRK-7 which would work great with your surge brake system. These are free-backing plates too so your trailer would be able to reverse without having the brakes lock up.
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Info for this part was:
Edited by:
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Installed by:
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Expert Research:
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Expert Research:
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Video Edited:
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Updated by:
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