Parts Needed to Convert Lippert 5,100 lb Trailer Axle to Disc Brake

Updated 02/03/2026 | Published 07/09/2024

Products Featured in This Question

Kodiak Disc Brake Kit - 12" Hub/Rotor - 6 on 5-1/2 - Dacromet - 5,200 lbs to 6,000 lbs

(49)

$548.98

Hydrastar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi

(242)

$1112.33

Question:

I have questions on converting my RV drum brakes to disc. I have Lippert axles, 5,100 lb P/N V000423837. Do I have 42 spindles? Is there a kit for that axle? If there is which kit and actuator would you recommend for the most stopping power?

asked by: Joe S

Helpful Expert Reply:

Hey Joe, so the Lippert 5,100 lb axle does use the 42 spindle that you have so we can easily help with a conversion to disc brake like with the part # K2HR526D which has a 6 on 5-1/2 inch bolt pattern.

For an actuator you can't go wrong with the Hydrastar part # HBA16-252-82 which comes with brake lines and all of the needed electronics for a tandem axle setup. We really like the Hydrastar actuators as we have found they are very reliable and also the quickest reacting.

expert reply by: Jameson C

Jameson C.

2/3/2026

Hey Joe, how did the disc brake conversion go with the Kodiak kit and Hydrastar actuator? Your results could really help others thinking about upgrading their Lippert axles for better stopping power.