Disc Brake Conversion For 2018 Grand Design Solitude 373FB With 7K Axles

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Question:

I have a 2018 solitude 373fb w/ 7k axles. I would like to convert the drums to disc. What kit will I need? My TV is a 2019 gmc sierra 3500hd denali, Im hoping the oem braking system on the truck will work. Please advise. Thanks

asked by: Anthony H

0

Expert Reply:

Hello Anthony, thanks for reaching out. We do have the parts you need to convert your 7K axles to disc brakes. Here is what I recommend:

- DeeMaxx Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coating - 9/16" Bolts - 7K # DE68YR

- Hydrastar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi # HS381-9067

- Kodiak Hydraulic Brake Line Kit - Tandem Axle - 20' # 20TA-BLKIT

A few things to note. The brake line kit I recommended has a 20' main brake line so I do ask that you verify this is the correct length for your trailer.

Also, there is a chance the OEM brake controller in your GMC Sierra may not be compatible with electric over hydraulic brakes. GMC/Chevy factory controllers are notorious for having issues. It may have an EOH mode you have to switch to, but it may not. If not, your best option will be to replace it with an aftermarket controller like the Tekonsha P3 # 90195 which has an EOH mode.

Take a look at the article I linked below. It goes over the process of adding EOH brakes in more detail.

If there is anything else I can help with at all feel free to leave a reply and I am happy to get back to you.

expert reply by: Jesse M

0

DeeMaxx Disc Brake Kit
(click to enlarge)

Anthony

4/7/2025

Thank you

Jesse M.

4/8/2025

@Anthony Of course! Come back anytime you need anything!

Answer 1

Hey Marc, welcome back! We can definitely put together the parts you need for the disc brake kit you are looking for but we don't have anything that is a single part number like what you mentioned. So you'd need two of the part #DE68YR for…

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Answer 2

Hey Michael, Thanks for the serial number of your axle, it made it possible to find the bearings and seal numbers so I could verify what would fit. If you want the best you'll definitely want to go with a DeeMaxx kit like the #DE66AR. This kit…

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Answer 3

Hello Darren. Thanks for reaching out, I can definitely help with this. To convert your 2024 Brinkley Z2900 5th wheel over to disc brakes, you will need a disc brake kit, a brake line kit, and electric over hydraulic actuator, and a breakaway kit for…

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Answer 4

Hello Rick, thanks for reaching out. The 7,000 lb axle on your 2021 Grand Design Solitude 310GKR uses a standard bearing combination, so finding compatible disc brakes will be easy. Here is what I recommend: - DeeMaxx Disc Brake Kit - 13"…

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Answer 5

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 8

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 9

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 10

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Answer 11

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 12

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Disc Brake Conversion For 2018 Grand Design Solitude 373FB With 7K Axles

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