Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K
(134 reviews)
Price: $165.69
In Stock
Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K
Item # AKFBBRK-7
Our Price: $165.69
This item qualifies for Free Shipping
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- Reviews (134)
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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
- Camper
- Car Hauler
- Utility Trailer
- Free Backing
- etrailer
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
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 (134 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.by: Van06/10/2021
Thank you the review is they Bolt right up I was about to buy Wheel cylinders, shoes and hardware! STOP! Buy the complete units you're going to be happy you did! etrailer you Rock!
by: Charles05/09/2021
They installed easily and worked perfectly after some miles I adjusted them and they stop confidently.
by: Blake 07/07/2022
Great Product and delivered quickly!
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!
Comments
My trailer brakes are still working great. Havent had to give this repair a second thought. Thanks
David V - 11/01/2018by: 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!
by: Jerry 04/22/2020
12" hydraulic drum brakes arrived protected in a well packaged box. Brakes were just as described and very easy to install. I have no hesitation ordering from etrailer again.
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.
by: Jeffrey 09/07/2021
The order was delivered in a timely manner and product was as expected...thanks.
by: Sandy 10/02/2020
This brake kit has not been used yet. We are building up a trailer. The mechanic looked them over and says they are great. Thank you!!!
by: Phil02/07/2019
Ordering was simple, shipping as promised, fit was perfect and products are still in use. Couldn't ask for more.
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!
by: Emerson 09/18/2019
Very good products no problems thanks for everything
by: Pat05/03/2019
Quick delivery, good price, perfect match and fit. Thank you!
by: Scott Augustine07/24/2018
Very helpful on the phone and everything ordered fit perfectly!
Thanks for all the help.
by: Michael12/11/2017
GOOD PRICE , EXACTLY WHAT I NEEDED , TIME SAVER.
by: Roy09/24/2020
thanks
by: Allan 10/01/2021
by: Lonny 07/22/2022
by: Oreilly07/30/2021
by: Roy 07/18/2022
by: William 09/06/2021
by: Jake S.05/24/2017
Detailed description and fast delivery
by: Eric04/23/2018
Great service
by: Antoine08/13/2019
Worked perfectly.
by: bryan cat hey04/14/2017
perfection from start to finish
25
135
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See what our Experts say about this etrailer Trailer Brakes
- Free-Backing Uni-Servo Hydraulic 12 x 2-inch Brakes for Military TrailerThe Hydraulic Brake Kit # AKFBBRK-7 is a set of left and right free-backing uni-servo hydraulic brakes rated for use on axles with weight capacities from 5200 to 7000-lbs. These 12 x 2-inch brakes use a 5-bolt mounting pattern to bolt to your brake flanges. You'll want to confirm that the axle rating falls within the range noted, that the mounting pattern matches too and that your wheel diameter falls in the compatible range of 14-1/2 to 16-1/2-inches.
view full answer... - 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... - Recommended Brakes for 4300-lbs Axle with 5 Bolt Mounting Flange and 15" WheelsYes. The Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K # AKFBBRK-7 will work for you since they're designed to work with a 5 bolt brake mounting flange and your 15" wheels. This is a free backing set of brakes and will fit inside your existing drums.
view full answer... - Recommended Free-Backing Hydraulic Brakes for Surge Brakes Without Reverse LockoutAll hydraulic brake drum systems are compatible with free-backing brake assemblies like # AKFBBRK-35-D for 3500 lb axles with 10 inch drums or # AKFBBRK-7 for axles 5.5K to 7K with 12 inch assemblies. The brake lines are run to the brake cylinder that only has a single piston to allow movement in reverse without engaging the brake shoes to stop the trailer. Let me know if you have more specific fit questions.
view full answer... - Selecting Replacement Free-Backing Hydraulic Brakes for Tandem 6K TrailerTrailer brakes are left- and right-hand specific but not front and back. So for a tandem 6K axle setup you'll use two left-hand and two right-hand 12 x 2-inch free-backing hydraulics brake assemblies. For a high value-for-the-dollar option I like the AxleTek brake pair # AKFBBRK-7-D. All choices are shown on the linked page. We label our brakes left and right, but you can always use the rule that the shorter of the two brake pads on the assembly should face forward.
view full answer... - Availability of 12 inch Surge Brake AssembliesWe do have 12 inch drum brake assemblies that are designed for surge brakes like the part # AKFBBRK-7-D that is Dacromet coated and comes with a left and a right hand assembly.
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- Are New Hubs/Drums Required To Use the Hydraulic Brake Kit AKFBBRK-7-DIf you replace the braking assemblies with the same size you currently have then you won't need new hubs and drums as well. The Hydraulic Brake Kit part # AKFBBRK-7-D measures 12" diameter x 2" wide which is standard for a 5,200 lb - 7,000 lb axles so as long as that is what you have then you won't need to replace the hubs and drums as well.
view full answer... - What is Difference Between Uni Servo and Duo Hydraulic Brake Assemblies for TrailerUni servo and duo servo is basically the style of wheel cylinder. It basically puts pressure on either side of the cylinder. The styles are interchangeable so if you have one style over the other you can go with either style. As long as your drum size is 12 inch and your axles are 5.2k to 7k the part # AKFBBRK-7-D would fit and work well.
view full answer... - Availability of 7k Trailer Brake Assemblies that are Free-BackingWe have 7k rated brake assembly sets like the part # AKFBBRK-7-D which are free-backing but none that have the hand brake option.
view full answer... - Determining Boat Trailer Drum Brake Size With an Measurement of 14" Across The Backing PlateThe diameter of a drum brake is measured inside the hub so your 14" outer diameter is most likely a 12" drum brake. Depending on the age of your axles on your trailer I may be able to look up what the manufacturer installed on the axle by the serial number. This is generally found on the tag in the center of the axle. If you are only looking for a replacement brake assembly this is generally determined by the weight capacity of the axle. The Hydraulic Brake Kit # AKFBBRK-7-D fits on 5,200-7,000lb...
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- Brakes for Home Built Trailer With 7K Axle and 12 x 2 DrumFor a 7K axle with 12 X 2 inch drum, we have the # AKFBBRK-7L (left) and # AKFBBRK-7R (right) that you refer to. These are free-backing hydraulic drum brake assemblies designed for use with a surge-type trailer brake actuator.
view full answer... - 12" Hydraulic Brake Replacement for Karavan US-4100-78-SSB-ST TrailerBased on my research, your Karavan US-4100-78-SSB-ST trailer uses standard 12" x 2" drums, so for a set of hydraulic brakes, I recommend the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies part # AKFBBRK-7 (black powder coat finish) or part # AKFBBRK-7-D (dacromet finish). These are compatible with 5,200 lb, 6,000 lb and 7,000 lb axles. For the mounting bolts and hardware, you can use part # BRKH12.
view full answer... - Recommended Brake Assemblies For 5,200lb Axles On A 22' Express EZ Load Boat TrailerNo, 5200lb - 7000lb brakes are 12" diameter while 3500lb brakes are 10" diameter. You'll need to go with some brakes like the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K # AKFBBRK-7 if you have hydraulic brakes or the Electric Trailer Brake Kit - Self-Adjusting - 12" - Left and Right Hand Assemblies - 5.2K to 7K # AKEBRK-7-SA for electric brakes.
view full answer... - 12 inch Free Backing Hydraulic Brake AssemblyBrake Assemblies like the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K item # AKFBBRK-7 will have the description in the title that the brakes are free backing. We also offer the same size free backing brakes in different finishes. Demco Hydraulic Brake Kit - Free Backing - Galvanized - 12" - Left/Right Hand Assemblies - 7K item # 42029-28. Hydraulic Brake Kit - Uni-Servo - Free Backing - Dacromet - 12" - Left/Right Hand - 5.2K to 7K...
view full answer... - Recommended Replacement Surge Brake Coupler To Replace Atwood 85778For your replacement hydraulic actuating coupler, I recommend the Demco Hydraulic Trailer Brake Actuator - Drum Brakes - Zinc Plated - 2" Ball - 7,000 lbs # DM72VR. This does not have an electric lockout so it is recommended to be used with free backing brake assemblies like # AKFBBRK-35 or # AKFBBRK-7.
view full answer... - Replacement Brake Assembly Recommendation to Replace Dexter 23-342 and 23-343We have similar assemblies to the Dexter part# 23-342 and the # 23-343 that your trailer has. For our house etrailer.com brand we have the part # AKFBBRK-7R-D and # AKFBBRK-7L-D which is a 12x2 7k rated brake assembly that would work well for you. These are also dacromet coated which means they will resist corrosion.
view full answer... - Torque Spec Recommendation for Installing 12 inch Brake Assemblies on Trailer AxleFor 12 inch brake assemblies the recommended torque spec is between 45 and 50 ft lbs.
view full answer... - Recommended Hydraulic Brake Assembly for Trailer with 5 Bolt Mounting Flange and 15" WheelsBecause you have a 5 bolt brake mounting flange on the axle, you will most likely have a 12" brake assembly on there. For an axle with a capacity of 5000-lbs to 7000-lbs I recommend using the Hydraulic Brake Kit - Uni-Servo - Free Backing # AKFBBRK-7. These will give you a reliable, free-backing 12" brake assembly that will work well and will be appropriately sized based off the information you've mentioned. These brakes do not come with mounting hardware so you will also need # BRKH12...
view full answer... - Replacement Hydraulic Brakes For 7,000 lb Dexter AxleThey do not have to be free-backing but you can replace the hydraulic brakes on your 7k axle with the Hydraulic Brake Kit - Uni-Servo - Free Backing - 12" - Left/Right Hand Assemblies - 5.5K to 7K # AKFBBRK-7. You will also need the Mounting Bolts and Hardware for 12" Brake Assemblies # BRKH12.
view full answer... - Replacement Drum and Disc Brake Kits for Tandem Axle Boat Trailer Used in Salt WaterWe can help you with new brakes for your tandem-axle boat trailer that is used in a salt water environment. We offer both electric and hydraulic drum brakes. Electric brakes are more and more supplied as the OEM equipment on boat trailers. This is mostly due to their lower cost and generally far simpler installation than hydraulic brakes. However, we do not have any drum brakes of either type with stainless steel construction. We DO have disc brake kits with stainless components and...
view full answer... - Why Does Trailer with Surge Brakes Lock Up Brakes When ReversedThis is one of the quirks of surge brakes which is why they make reverse lockouts to allow the trailer to be reversed. If you had a Titan actuator for example you'd want the lock out solenoid part # T4748800. If you have a different brand let me know. If the brakes are drum there might be a set of free-backing plates you could swap to that would allow the trailer to be backed up as well. If you had 12 inch drums you'd need the set part # AKFBBRK-7-D or if you had 10 inch part # AKFBBRK-35-D.
view full answer... - Recommended Electric Lockout or Free Backing Brake Assemblies for Surge Brake ActuatorThe Titan Zinc-Plated Brake Actuator - Drum - 2-5/16" Ball - Bolt On - 8,000 lbs # T4079200 does not have a manual lock-out. Because of this, it is recommended to use an electric lockout like # T4748800 or free backing brakes so that you can back your trailer without activating the trailer brakes. You can use the Hydraulic Brake Kit - Uni-Servo - Free Backing # AKFBBRK-35-D for 10 inch assemblies or # AKFBBRK-7 for 12 inch assemblies.
view full answer... - Troubleshooting Brakes Locking Up When Backing on New Tandem Axle TrailerIt sounds like your new tandem axle trailer has a surge brake coupler. You will need to use the manual lockout on the coupler if there is one or add a Replacement Solenoid Valve for Titan Brake Actuators with Reverse Lockouts # T4748800. This electric lockout connects to a 5-way trailer plug like # HM47890, and an adapter like the Tow Ready 4 Pole to 5 Pole Trailer Wiring Adapter # 20036 will connect to the reverse light circuit at your tail light to send a signal to that solenoid to...
view full answer...
- How Do I Determine Which Hydraulic Brake Assemblies to Use on My TrailerIf you can check the specs on your axle and determine the capacity, that's going to be the easiest way to find out what brakes you need. If you've got a 3500-lbs axle (or smaller) you'll likely have 10" brake assemblies and can use something like the # AKFBBRK-35, which are a free backing hydraulic brake assembly. Since these assemblies do not come with mounting hardware you'll need mounting hardware # BRKH10B. If you've got a 5000-lbs or larger axle you'll need a 12" brake assembly like...
view full answer...
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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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Written by:
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Video by:
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Test Fit:
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