Recommended Disc Brake Kit for 2020 Grand Design Reflection 5th Wheel 311BHS

Question:

What disc brake conversion kit would you recommend for a 2020 Grand Design Reflection 5th Wheel 311BHS?

asked by: Derek W

Expert Reply:

In order to recommend a disc brake kit for your trailer, some additional information will be needed to make sure it fits the spindles.

The first thing you will need to know is which inner and outer bearings you currently have. You may be able to find the numbers stamped on your existing bearings. If they are worn off, you will need to measure where the bearings ride using a digital caliper like # PTW80157. I have attached a picture showing where you will need to measure and where the part numbers are typically found.

The other piece of information you need is the bolt pattern. The HydraStar Disc Brake Kit w/ Actuator for Tandem Axle Trailers # HSE7K-T1 you looked at has a 8 on 6-1/2 bolt pattern. It also uses inner bearing # 25580 and outer bearing # 14125A.

If you find that your bearings match the bearings this kit uses and you need an 8 on 6-1/2 bolt pattern, then this kit would be a great choice. If this does not fit what you have I would be happy to provide a recommendation if you can provide me with the bearing numbers or measurements.