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Expert Answers about Grand Design Momentum 5W Toy Hauler


  • Best Parts For Electric Over Hydraulic Brakes on 2019 Grand Design Momentum 351M
  • We can definitely put together a complete kit so you can add electric over hydraulic brakes to your 2019 Grand Design Momentum 351M tandem-axle trailer. You'll need to add four parts to your trailer - the brakes, actuator, brake lines, and breakaway kit; the best for that are the following: - (Two of these) DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless # DE88YR - Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi # HS381-8067 -...
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  • Complete Bathroom Sink Option For A 2017 Grand Design Momentum 349M
  • We do have plenty to choose from, for your 2017 Grand Design Momentum 349M however It depends on what you're needing. For instance, we have the: -LaSalle Bristol Single Bowl RV Bathroom Sink # 34416166PP, Which includes a drain tube, mounting brackets, and installation hardware. This sink has an exterior measurement of 16" long, 12-1/4" wide, and 6-5/8"; and an interior measurement of 13-1/2" long, 10-1/8" wide, and 5" deep. If you're after something different, let me know and I'd be...
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  • How To Measure For Replacement Leaf Springs When Current Springs Are Flat
  • I would be happy to help! When measuring for new leaf springs you need to either take them off of the trailer, or jack up the side of the trailer so that the axle is not carrying any weight. Based on the pictures of the leaf springs on your 2017 Grand Design Momentum 398M with Triple 7000lb axles they do look a bit flat, but when weight is not on them they should get a curve back in them. If you can tell me how long from center of spring eye to center of spring eye the springs are, I...
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  • Recommended Suspension Enhancement for 2017 Grand Design Momentum 376th Toy Hauler
  • I have a solution for your 2017 Grand Design Momentum 376th, but there is a not a SuperSprings or Sumo Springs product designed for this application. The best solution to improve the handling and reduce chucking and porpoising on your trailer is the Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 5,200-lb to 7,000-lb Axle # RM-2460 and Roadmaster Comfort Ride Add-On Kit for Triple Axle Trailers - 5,200-lb to 7,000-lb Axles # RM-2460-50. This heavy duty shock system with...
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  • Recommended Trailer Hitch and Cargo Carrier for a Grand Design Momentum Toy Hualer
  • I have some great options for you to help with carrying extra cargo on the rear of your Grand Design Momentum. The best option as you mentioned is with a trailer hitch, the Adjustable Width Trailer Hitch Receiver for RVs part # 13703 is what I recommend as it's our most widely compatible trailer hitch for RV's. It will then allow you to attach all different kinds of accessories from bike racks to cargo carriers like the 24x60 Curt Cargo Carrier for 2" Hitches part # C18152. This cargo carrier...
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  • Diameter of Mounting Hole Base for Gustafson Glass for RV Pendant and Sidewall Lights
  • The opening in the Gustafson Glass for RV Pendant and Sidewall Lights # 277-000430 that connects to the base has a 1" diameter. I have attached a photo to demonstrate.
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  • Torque For etrailer 12 Inch Electric Brakes
  • The correct torque is 30-50 ft. lbs for the etrailer Electric Trailer Brakes - 12" - 5,200 lbs to 7,000 lbs # AKEBRK-6. As for the wheel it depends on if you have 1/2" or 9/16" studs; you should have 16" wheels so with 1/2" studs it is 90-120 ft. lbs of torque and 9/16" studs are 120-140 ft. lbs.
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  • Replacement Trailer Wheel For a 2018 Grand Design Momentum Toy Hauler With 17.5", 8-Lug Wheels
  • While I could not find any information with the wheel number you gave I do know Lionshead has discontinued a bunch of their wheels which is most likely why you cant find your wheel. We do have a similar Aluminum Lynx Trailer Wheel # 274-000006 or Wheel and Tire # LHAS701 which is as close to the Liger # LH49FR you found as we can get. To find your exact wheel there is a chance a local dealer may still have some in inventory or you can check RV salvage yards or used parts companies to...
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  • How Does Electric Trailer Brake Assembly Get Wired To Trailer?
  • I would be happy to help! Electric Trailer Brakes like the # AKEBRK-6R you were looking at are pretty easy to wire to your trailer. On the back of the brake assembly there is two wires that go to the brake magnet. Pick one of the wires and ground it to the frame of your trailer by adding a ring terminal # DW05737-1 and a self tapping screw. If the wire is not long enough to reach the frame then you will need to add a piece of # 16-1-1. The other wire going to the brake magnet will need...
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  • How Much Travel Does The Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2580 Offer?
  • I reached out to Roadmaster about the Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580 you are looking to install. While they are unable to give exact numbers for the length of travel on the leaf springs the shocks do have 5-1/2" of maximum travel. You may notice an initial change in ride height due to the new and heavier leaf springs but the system is not designed to increase your overall ride height on your 2018 Grand Design Momentum 351M 5th wheel camper.
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  • How To Find Correct Replacement Circuit Board for MaxxAir MaxxFan Plus Roof Vent
  • I won't be able to reference the numbers printed on the circuit board but all you need to do to determine the correct replacement circuit board for a MaxxAir MaxxFan Plus Roof Vent is look for the model number under the screen. If it is a 4751KS, 4761KS, and 4951KS then you can use part # MA10A04751KS but if not we would not have an option.
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  • Disc Brake Kit Recommendation for 8K Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks
  • 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.
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  • Brakes Engage On Grand Design Momentum While Hooked Up To Shore Power
  • The shore power circuit for your trailer should not have anything to do with the trailer's brakes as they are on completely different circuits and use an entirely different type of current (AC vs. DC). However, if you have a short on the AC power circuit and the circuit is sending power to the trailer frame/body which is commonly referred to as "Hot Skin" then that could then cause the brakes to engage via the ground wire. Therefore, I recommend you disconnect shore power and see if the...
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  • Recommended Replacement Control Panel for a Lippert Ground Control TT/OneControl
  • The Replacement Touch Screen Control Panel for Lippert Ground Control TT or Lippert OneControl # LC83VR does not have a warranty but it is a direct replacement for your current control panel so it's going to control all of the things your old one did.
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  • Replacement Brake Assemblies for Dexter 7,000 lbs Axles
  • Thanks for the information but I was not able to get anything brakes related off of those part numbers from Lippert to compare to our inventory. To replace the brake assemblies on your Dexter 7,000 lbs axles we have two options that I have listed below: Dexter Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 7,000 lbs item # 23-180-181 Dexter Nev-R-Adjust Electric Trailer Brakes - 12" - Left/Right Hand Assemblies - 7K item # 23-464-465
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  • How to Get Smoother Ride For 2017 Grand Design Momentum 399TH That Won't Raise Trailer
  • While we do have an option for you to get a smoother, more comfortable ride for your 2017 Grand Design Momentum 399TH, the Center Point # LC1565401 is going to raise your trailer by 2 inches, and there isn't any alternative method of install or anything that won't affect your ride height. So instead, what I recommend are shock absorbers from Roadmaster: - Roadmaster Comfort Ride Shock Absorbers for Triple Axle Trailers # RM-2460-3 These are the right size for your triple-axle '17 399TH,...
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  • Recommended Furrion Tankless Water Heater Door Size For A 2021 Grand Design Momentum 376THS
  • The access doors from Furrion are 1/8" larger than their dimensions so the 16" x 16" would really be 16-1/8" x 16-1/8". If the height is less than 16" and the width is just over 16" then I recommend the Furrion RV Tankless Water Heater # FR48SR. If the height is 16" or larger then I recommend going with the 18" x 18" # FR98SR. To complete your installation you'll also want to put some butyl tape on the mounting flanges for both the main unit and access door. You'll also want some non-sag...
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  • Upgraded Pin Box for a Grand Design Momentum 381M 5th Wheel
  • Yes, the Trailair Flex Air 5th Wheel Pin Box part # LC369535 will replace the Lippert 1621 Pin Box on your Grand Design Momentum 381M. The Trailair Flex Air will provide a dramatic improvement in overall ride quality as well as reducing the amount of wear and tear on both the vehicle and trailer.
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  • Is Curt Q20 5th Wheel Hitch Compatible with Reese 5th Airborne Premium 5th Wheel Air Ride King Pin
  • I do have a solution for you but unfortunately the Curt Q20 hitch head is not compatible with a pin box that has a rotating turret like the Reese 5th Airborne Premium 5th Wheel Air Ride King Pin. This is due to the spherical axial bearing that allows the hitch head to easily pivot. Instead, I would go with the Curt E16 5th Wheel Trailer Hitch - Slide Bar Jaw - 16,000 lbs # C16115 and Wedge # RP64FR. The wedge will keep the king pin from rotating inside the fifth wheel hitch and this setup...
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  • Recommended RV Storage Cover For A 2021 Grand design Momentum 395MS Fifth Wheel Toy Hauler
  • The length I'm seeing for a 2021 Grand design Momentum 395MS Fifth Wheel Toy Hauler is 43' 8" so the only compatible cover available for you is the Classic Accessories PermaPRO Deluxe Extra Tall 5th Wheel Cover or Toy Hauler Cover # CA80-299-203101-RT. This cover fits fifth wheels 41'- 44' in length and has adjustable front and rear tension panels and elasticized hem corners to provide a snug fit. The zippered panels allow access to the RV doors and storage compartments for easy access...
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