Disc Brake Conversion for 7K Trailer Axles With 9/16 Inch Wheel Studs

Published 10/20/2026

Products Featured in This Question

DeeMaxx Disc Brake Kit - 13" Rotor - 8 on 6-1/2 - Maxx Coating - 7K Dexter

(81)

$460.73

DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K

(29)

$3845.76

DeeMaxx Hydraulic Brake Line Kit - Tandem Axle - 20'

(18)

$286.80

DeeMaxx Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coating - 9/16" Bolts - 7K

(29)

$798.58

DeeMaxx Alpha G1600X Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi - 28.7 oz

(3)

$953.12

Question:

I have a Forest River Sabre 36FLX with 7k Terrain axles. However the wheel studs are 9/16”. The only disc brake conversion kits I see with 9/16” studs come with new hubs, which I don’t want since my trailer is less than 2 years old. Does Deemax or another brand make a disc brake conversion kit for my application without having to buy new hubs? I only see kits with 1/2” wheel studs. Thank you.

asked by: Dave

Expert Reply:

Hey Dave! It sounds like you may already have idler hubs and you're looking for slip-on rotors so you can keep them. If that's the case, I recommend the DeeMaxx Disc Brake Kit # DE49YR. This uses 13" slip-on rotors with an 8 on 6-1/2" bolt pattern and works with 9/16" wheel studs. You'll need two kits for your tandem-axle Sabre.

To complete this setup, you'll also need the DeeMaxx Alpha G1600 Actuator # DE77SR and Tandem Axle Brake Line Kit # DE57SR for your conversion.

If you currently have electric drum brakes, you'll need to replace the hub and drum assemblies anyway. In that case, I recommend the DeeMaxx Disc Brake Kit # DE57NR instead. This is a complete kit with the brakes, brake lines, and EOH actuator so you will get everything under a single part number.

Where are you headed once you get the disc brakes installed?

expert reply by: Robin H

DeeMaxx Disc Brake Kit
(click to enlarge)

Dave

10/20/2026

Thx. I will need the complete DE57NR after all. Just looking at options if I purchased: 2 of the the hub/rotor DE68YR, Actuator DE77SR and line kit DE 57SR would I have everything I needed? It seems that it is a few hundred cheaper than buying the DE57NR complete kit. Also I have a 2025 Chevy Silverado 2500. Does it need an adapter to work with the stock brake controller? Thanks

Robin H.

10/20/2026

@Dave yes, you can purchase two # DE68YR brake kits along with the # DE77SR actuator and # DE57SR brake line kit instead of the complete # DE57NR. That will give you the components you need for the conversion, and if it's a few hundred dollars cheaper, I'd definitely go that route. The DeeMaxx Alpha G1600 actuator is compatible with the factory brake controller on your 2025 Silverado 2500, so you won't need an additional adapter. Just make sure you have the controller set to the hydraulic brake mode.