Disc Brake Kit Recommendation for 5th Wheel that has Tandem Lippert 7k Axles

Updated 02/19/2026 | Published 02/11/2026

Question:

Hello, i have a 5th wheel that I would like to convert to disc brakes. It has two 7K Lippert axles V000157328. Which conversion kit will work with these two axles?

asked by: Sonny C

Expert Reply:

Hey Sonny, the correct disc brake kit for your 5th wheel camper that has two Lippert 7k axles would be the Hydrastar kit part # HSE7K-T1SO. This comes with everything from the rotors and calipers to the nicest electric over hydraulic actuator around so it will work really well for you. It also comes with the brake lines needed as well. Are you planning any other upgrades soon?

expert reply by: Jameson C

Sonny C.

2/19/2026

Thanks Jameson! Should I pull tires off to confirm that there is an idler hub? I thought that the bearing assembly was built into the drum on the Lippert 7K axles?

Jameson C.

2/19/2026

@SonnyC Glad to help! Actually you probably need the kit part # HSE7K-T1 which comes with hub/rotors instead of the slip on discs. I'd be shocked if you had idlers currently.