Yes, we do have a triple axle Roadmaster Comfort Ride kit for 8k axles with the part # RM-2460-2580-3 which is for 3 inch diameter axles. Since you have 7k Dexter axles that would mean you have 3 inch diameter axles. This would make a huge difference in ride quality and performance on your 2020 Grand Design Momentum 399TH. You should note that just because you will have more suspension capacity the overall capacity of the trailer would not increase. view full answer...
Hello Greg. We do offer one black water tank T-handle that is designed to work with an internally threaded shaft. It has a screw that inserts down thru the top of the handle. Take a look at the following:
Replacement Handle for LaSalle Bristol Cable-Actuated RV Waste Valves - Black Water Tank # 34490CMA1
This is designed to work specifically with the LaSalle Bristol Cable-Actuated RV Waste Valves such as part # 34466N4AB120GM. Generally, the handles are brand specific to the valve, and... view full answer...
Hey Kyle!
The Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580-3 can be used with disc brakes like the Kodiak Disc Brakes # KOD67VR but aside from that we unfortunately don't have any 8K axles - the heaviest we have is rated for 7K. For something more in that HD range you'll need to have a trailer shop or RV dealer custom order an axle for you. view full answer...