Disc Brake Conversion Kit for a 2019 Grand Design Momentum Toy Hauler

Published 12/17/2021

Products Featured in This Question

Hydrastar Disc Brake Kit w/ Actuator for Triple Axle Trailers - 9/16" Studs - 8 on 6-1/2 - 7K

(19)

$2795.42

Replacement Trailer Hub Bearing - 02475

(2074)

$16.74

Unitized Oil Seal for Trailer Hubs

(56)

$76.46

Replacement Trailer Hub Bearing - 25580

(2074)

$21.83

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

(55)

$825.88

Hydrastar Hydraulic Brake Line Kit - Tandem Axle - 25' Long, 3/16" Main Line

(35)

$327.87

Question:

I have a 2019 grand design momentum 350g with tandum 8 lug axles what kit do i need for my toy hauler it is 40’ long

asked by: Jeremy

Expert Reply:

Thanks for the picture! I have a great set of disc brakes for your 2019 Grand Design Momentum Toy Hauler. You are going to need a couple of other parts too to convert your trailer over to a disc brake set up.

I recommend the Kodiak Disc Brake Kit - 13" Hub/Rotor - 8 on 6-1/2 - Raw Finish - 7,000 lbs item # K2HR79. This kit will fit your 2019 Grand Design Momentum Toy Hauler's 7,000 lbs axles and 8 on 6-1/2" bolt pattern.

You're going to need an actuator. The HydraStar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi item # HS381-8067 will work perfectly with your setup.

For brake lines you will want the HydraStar Hydraulic Brake Line Kit - Tandem Axle - 25' item # HS496-252.

You will also need to replace your bearings. For each wheel you will need item # 02475 and item # 25580 and a Unitized Oil Seal for Trailer Hubs item # 10-63.