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Expert Answers about Grand Design Momentum 5W Toy Hauler


  • How to Level Trailer that Sits Nose High After Adjusting Hitch Height for Bed Rail Clearance
  • Ideally your 5th wheel trailer sits as level as possible and also there's at least 6 inches of clearance between the overhang of the trailer and the bed rails of the truck. In a situation like yours where having the needed bed rail clearance causes the trailer to sit nose high you would have to lift the trailer suspension, or if the truck happens to have a lift kit you'd need to remove it and go back to stock ride height. For a tandem axle trailer like yours we do have a 2-1/4 inch lift...
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  • Shock Kit Recommendation for 2017 Grand Design 328M
  • The Roadmaster Comfort Ride shock kit part # RM-2460 is going to give you the smoothest ride quality and have the easier install so that would be what I would recommend for your 2017 Grand Design 328M toy hauler. I attached an install video link to this page that shows it install on a similar 2017 Grand Design for you to check out as well.
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  • Tonneau Cover and Bed Mat Recommendation for a 2019 Chevy Silverado 1500 5-3/4 Foot Bed
  • The tonneau cover and bed mat combo I recommend for a 2019 Chevy Silverado 1500 with 5-3/4' bed is the BAKFlip MX4 Hard Tonneau Cover part # BAK448130 and BedRug Custom Truck Bed Mat part # BMC19CCS. The BAKFlip MX4 is one of my favorite options on the market because it has a very clean, flush look once installed and it is very durable so much so that you can even place items on top (up to 400 lbs). The BAKFlip MX4 is also very easy to install. The BedRug Custom Truck Bed Mat will pair...
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  • Can the Mounting Post On the B&W Companion Be Extended To fit a Recessed Gooseneck?
  • I do have a couple options that may work for you, but the post on your B&W Companion is not extendable. With that being said, the Replacement Base for B&W Companion Flatbed 5th Wheel Trailer Hitch # BWRVB3055 will work with your pre-existing Companion head ( # BWRVC3006 ) and is rated for up to 22,000 pounds. The base of this option will measure 18 inches by 18 inches, so you will need to measure to make sure it will fit. If your space is under that, the only other option will be the...
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  • Tips for Installing Replacement Foam Grip with Hardware for Lend-a-Hand Grab Handle
  • To install the Replacement Foam Grip with Hardware for Lend-a-Hand Grab Handles for RVs # FP-1001-R that you referenced will require you to remove the handle from the mounts of the RV. You'll want a ratchet/socket plus a wrench to do this. Once the handle is removed you'll be able to remove the old grip by any means needed. You can cut it off, rip it off, or slide it off based on what makes the most sense. So the new grip is going to be pretty tight and might seem difficult to slide onto...
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  • Does RV Kitchen Faucet w/ Pull Down Spout # 277-000130 Come with Handles in Pictures
  • The handle you see in the product pictures of the RV Kitchen Faucet w/ Pull Down Spout # 277-000130 that you referenced is what you will get when you order this. Sometimes our reviews will show products that are very similar but are different part numbers which is why the review you saw shows a different style.
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  • Replacement Lippert OneControl Touchscreen Panel for 2019 Grand Design 399TH
  • Since you have the Lippert OneControl system in your 2019 Grand Design 399TH the correct replacement touch screen is the part # LC83VR. On the bottom of the panel there are a few connections that easily remove from the panel but the amount of them is based on the functions your panel controls. It could be up to three plus a power cord, but they are easy to unplug so it won't be difficult.
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  • How To Choose the Correct MORryde CRE3000 Rubber Equalizers
  • The MORryde CRE3000 Rubber Equalizers are a great upgraded equalizer option for any trailer. They are cushioned so they will do a great job of absorbing road shock and providing a smoother ride. In order to choose the correct ones you'll need to measure your axle spread (on center). If you have 33" then use part # MR87ZR but if you have 35" then use part # MR27ZR.
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  • Recommended Way to Add Disc Brakes to 2020 Momentum 376THS
  • The first thing you'd want is the Kodiak Disc Brake Kit # K2HR79E for each axle. This is a 7k kit with an oil bath dust cover that fits your current spindles and also is compatible with your wheel size. For bearings you'd need to order the # 25580 and # 02475 separately as well as the seal # 10-63 as they are not included. Since you have a triple axle trailer you'd need three of the disc brake kits and 6 each of the bearings and seals. For an actuator kit the best option is the Hydrastar...
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  • SuperSprings SumoSprings For a 2021 Grand Design Momentum 395M 5TH Wheel Toy Hauler
  • I recommend using the SumoSprings Trailer Helper Springs # SS26MV on your 2021 Grand Design Momentum 395M. These springs are rated for use on axles with a capacity of 5,000-8,000lbs and are mounted below the leaf springs. Your Momentum has three 7,000lbs axles that are mounted below the leaf springs. It is a good idea to verify that the springs will fit between your springs and frame properly. The SumoSprings are 5" tall and 4" in diameter. You will want to verify that they will fit and...
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  • Does MAXX AIR II Vent Cover # MA86JR Come with Bug Screen
  • The MAXX AIR II Vent Cover # MA86JR also listed as part number 00933082 that you referenced does not come with a bug screen built into it nor is there one available for it.
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  • Replacement Rubber Grip for Door Handle on 2018 Grand Design Solitude 373FB
  • All you need to replace the rubber grip of your RV door handle is the part # FP-1001-R that you referenced. This is designed as a replacement for the Lend a Hand style door handle you have on your 2018 Grand Design Solitude 373FB which is breaking down.
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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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  • Suspension Upgrade Recommendation for 2019 Grand Design 351M
  • If the suspension of your 2019 Grand Design 351M is currently in good working order but you want to improve what you have by making the ride quality smoother you could go with just the shock portion of the Roadmaster Comfort Ride with part # RM-2470. You'd want to measure the diameter of your axles though. If they are 3-1/2 inch like what most 8k axles fit then the correct kit is the # RM-2470. If they instead are 3 inch you'd want the part # RM-2460.
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  • Determining Which HydraStar Disc Brake Kit Fits 2017 Grand Design Momentum W/ Triple Axles
  • I would be happy to help you determine which disc brake kits fits your 2017 Grand Design Momentum M399TH Toy Hauler but you will need to first confirm your bearing combination. The easiest way to do this is by removing one of your current hub assemblies and checking the face of both the inner and outer bearings for a stamped bearing number as shown in the included picture of the # L44649. If your bearings are worn to the point that you cannot read the bearing numbers then you will need...
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  • Recommended Spare Tire for Grand Design Momentum 351M
  • Yes, we have some excellent spare wheel/tire combos for a Grand Design Momentum 351M. It would be much more cost effective to just go with a basic wheel option so in which case I recommend the Provider ST235/80R16 Radial Trailer Tire w/ 16" White Spoke Wheel part # A16R80GWS. It comes ready to go with no mounting or balancing required.
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  • Which SumoSprings Kit Fits 2014 Grand Design Momentum 385TH
  • Since your 2014 Grand Design Momentum 385TH has 8k axles the correct SumoSprings kit would be the part # SS26MV for if your axles are under your leaf springs or part # SS33HR if they are above instead.
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  • Recommended Upgrade for Equa-Flex Cushioned Equalizers
  • As with any rubber equalizer, they can and will break down over time. That said, the Dexter E-Z Flex Suspension Kit comes with built-in zerk fittings, heavy duty shackles, and a five year warranty unlike the Equa-Flex Cushioned Equalizers which only have a one year warranty and no way to lubricate. Therefore, the Dexter E-Z Flex Suspension Kit will be a good upgrade option, part # K71-653-00 for 35" spread or part # K71-652-00 for a 33" spread.
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  • What All Is Needed To Convert To Disc Brakes On A 2021 Grand Design Momentum With 7,000 Pound Axles?
  • If you are wanting to upgrade to disc brakes on your 2021 Grand Design Momentum 5th Wheel Toy Hauler, you are definitely in luck. We actually have an install video of the Kodiak Disc Brake Kit # K2HR712E being installed on a 2020 Momentum and is the one I recommend going with. These have an E-coat finish that provides good corrosion resistance and can actually be used for freshwater and limited saltwater use, though I don't recommend submerging your toy hauler. This kit will also match...
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  • What Type of Brake Fluid to Use with Kodiak Brake Assemblies
  • Kodiak recommends DOT 3 brake fluid with their brake kits like the # K2HR79 that you referenced. Most applications can easily flush and be filled with a liter or quart so that's what I would grab at your local auto parts store.
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