bing tracking image
  1. Trailer Brakes
  2. Dexter
  3. Disc Brakes
  4. 8000 lbs Axle
  5. Hub and Rotor
  6. 16 Inch Wheel
  7. 16-1/2 Inch Wheel
  8. 17 Inch Wheel
Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - 8 on 6-1/2 - E-Coat - 8K - Nev-R-Lube

Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - 8 on 6-1/2 - E-Coat - 8K - Nev-R-Lube

Item # K71-646-2-91
Our Price: $2,362.82
Trailer Brakes
This item qualifies for Free Shipping
Shipping Weight: 136 lbs
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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.

Product Images

Need help with installation?
Locate installers near me
Two brakes fit 8K axles with 16" to 17" wheels. E-coat finish on hubs, rotors, calipers, and mounting brackets resists corrosion. Lubricated, sealed bearings minimize maintenance. 5/8" Wheel studs and grease caps included. Great Prices for the best trailer brakes from Dexter. Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - 8 on 6-1/2 - E-Coat - 8K - Nev-R-Lube part number K71-646-2-91 can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Q & A (0)
  • Photos
  • Why etrailer?

Dexter Trailer Brakes - K71-646-2-91

  • Disc Brakes
  • 8000 lbs Axle
  • Hub and Rotor
  • 16 Inch Wheel
  • 16-1/2 Inch Wheel
  • 17 Inch Wheel
  • Camper
  • Car Hauler
  • Utility Trailer
  • 8 on 6-1/2
  • Dexter
  • 5/8 Inch Studs

Two brakes fit 8K axles with 16" to 17" wheels. E-coat finish on hubs, rotors, calipers, and mounting brackets resists corrosion. Lubricated, sealed bearings minimize maintenance. 5/8" Wheel studs and grease caps included.


  • Trailer brake assemblies make it easy to upgrade from drum brakes to disc brakes for better performance
    • More consistent stopping, even at highway speeds
    • Dramatically shorter stopping distance
    • Easier and less expensive to maintain
  • E-coat finish provides corrosion resistance for freshwater and limited saltwater use
  • Vented rotors help to regulate temperature to prevent overheating
  • Included hubs replace your existing hubs
  • Nev-R-Lube bearings come pre-lubricated and pressed into hubs at factory
    • Sealed bearings include seals and inner and outer races
      • No need to replace seal when checking brakes
      • No need to lubricate bearings
  • Self-adjusting calipers ensure maximum surface contact for smooth, equal braking
  • Semi-metallic brake pads resist heat and provide excellent grip
  • Ductile iron mounting brackets provide strength and durability
    • Weld-on flanges sold separately
  • Kit includes 2 full brake assemblies for 1 axle
    • 2 E-coated rotors
    • 2 E-coated hubs with bolts pressed in
    • 2 E-coated ductile iron calipers
    • 4 Semi-metallic brake pads
    • 2 E-coated caliper mounting brackets with bolts and nuts
    • 2 Nev-R-Lube bearing cartridges
    • Grease caps
    • Thread sealant
  • Hydraulic brake actuator and lines (sold separately) are required for brakes to be activated
    • Requires psi rating of at least 1,600
  • Made in the USA


  • Fits:
    • Axle capacity: 8,000 lbs
      • Dexter Nev-R-Lube spindle
    • Wheel size: 16", 16-1/2", and 17"
  • Bolt pattern: 8 on 6-1/2"
  • Wheel bolt diameter: 5/8"
  • Rotor diameter: 12-1/4"
  • Brake flange configuration: 4 bolt
  • Bearing cartridge size: 50 mm
  • 5-Year limited warranty

K71-646-00 Dexter Axle Disc Brake Assembly - 12-1/4" Rotor - 8 on 6-1/2 - E-Coat - 8,000 lbs - Never Lube

008-402-91 Dexter Axle Trailer Hub - Never Lube - 8 on 6-1/2 - E-Coat - 5/8" Bolts - 8,000 lbs


See what our Experts say about this Dexter Trailer Brakes

  • Can 7k Nev R Lube Trailer Axle be Converted to Disc Brake
    I really wish we did but at this time we do not. But do you happen to know what size bearing cartridge your hubs use? Looks like we have the 8k size and 6k size but nothing on the 7k. Hopefully its' 50 mm though.
    view full answer...
  • Disc Brakes for 7K Dexter Nev-R-Lube Axles
    For your application you can go with the kit # K71-646-2-91 if you have 5/8" wheel bolts or you can go with the kit # K71-646-2-90 if you have 9/16" wheel bolts. If your current brakes are hydraulic then you need to make sure that the lines and actuator are rated for 1,600 psi. If your current brakes are electric then we need to swap out all of the brake wiring for hydraulic lines and an EOH actuator. Let me know what you have and I can help you figure out what else you may need.
    view full answer...
  • Cross Referencing a Dexter Hub with 70-7 Stamped On It
    The only thing I found on your Dexter 70-7 is the Replacement 13" Rotor for Dexter Disc Brakes # K71-631-00 which has 70-7 stamped on it. The # K71-631-00 fits 8,000 lb. Dexter disc brake kits like the # K71-646-2, # K71-646-2-91 or # K71-646-2-90.
    view full answer...
  • Disc Brake Conversion For Trailer With Electric Brakes Using Nev-R-Lube 50MM Hub Bearings
    If the 7,000lb axles you have use the 50MM Nev-R-Lube Bearing # 31-71-3 for their hubs, you will be able to use the Dexter Disc Brake Kit - 12-1/4" Hub/Rotor # K71-646-2-91 to convert over to electric over hydraulic disc trailer brakes. If you are unsure of the parts on your axle you can send me a picture of your axle tag or the serial numbers off each axle and I can confirm what parts are used. You will also need a kit like the HydraStar Electric-Hydraulic Actuator w/ Line Kit for Disc...
    view full answer...
  • Hub and Rotor Fit for Dexter Hub and Drum Assembly on Nev-R-Lube Axle
    The Kodiak hub KHR138XL9E you referenced has been discontinued. I recommend the Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - 8 on 6-1/2 - E-Coat - 8K - Nev-R-Lube # K71-646-2-91 which will fit on your Nev-R-Lube axle just like the Drum Assembly # 8-389-81UC3. If you need further recommendations, please let me know and I'd be happy to assist.
    view full answer...
  • Recommended Disc Brake Upgrade for 2010 Cameo Trailer by Carriage
    Your 2010 Cameo by Carriage can have the axles upgraded and disc brakes added, but you would need to contact the manufacturer to ensure your capacity would be increased because it will be based on the weakest component. We don't carry any disc brake assemblies for the 9K axles, but we do have the 8k and 10K options. I've attached an article to assist with upgrading to EOH disc brakes. My recommendation is to keep your current Dexter axles and add the Dexter Disc Brake Assembly - 12-1/4"...
    view full answer...
  • Recommended Disc Brake Assemblies for Nev-R-Lube Bearing 7,000 or 8,000 lb Axle Capacity
    For your upgrade to disc brakes, we have the Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - 8 on 6-1/2 - E-Coat - 8K - Nev-R-Lube # K71-646-2-91. This will give you the assemblies to fit your 7K axles which are the same bearing size as the 8K axles, but you will also need to upgrade your brake actuator as disc brakes require a psi rating of at least 1,500 lbs compared to the 1,000 lbs of drum brakes. These assemblies will work with zero offset wheels that are 16 inches or larger. You...
    view full answer...

Do you have a question about this Trailer Brake?

  • Why

    At we guarantee:
  • 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

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

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Brian T
Written by:
Brian T

At 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.

Product Experts Available Now!
Call 1-800-940-8924