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Expert Answers about Grand Design Momentum G-Class 5W Toy Hauler


  • Can HydraStar Disc Brake Conversion Fit on Trailer that Used 9/16 inch Studs
  • Since trailer wheels that can be used with 9/16 inch diameter wheel studs can also be used with 1/2 inch diameter wheel studs you can use the HydraStar Disc Brake Kit part # HYD54FR with your current wheels without any issue. You will need new lug nuts though like with the part # KALN1375S which is a one piece made from stainless steel that won't swell up or corrode like other options.
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  • Troubleshooting Installation Of Furrion Side Maker Cameras On A 2021 Grand Design Momentum 350G
  • I would first start by turning your running lights on and using a circuit tester # PTW2992 check which wire (black or white) is your power. From my experience you can't always just go off of the standard wire color for power/negative as manufacturers love to complicate things. Once you know which wire is your power you can wire the Red and Brown wires from the LED Marker Light RV Side Cameras w/ Night Vision for Furrion Vision S Systems # FCE48TASL to it and the black to the ground wire....
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  • Is Dexter Leaf Spring Capacity of DX74XR 4k or 8k
  • The Dexter leaf springs part # DX74XR are for an 8,000 lb rated trailer axle. Individually that would mean they would be rated at 4,000 lbs.
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  • Replacement Side Marker Light for a 2022 Grand Design Momemtum 31G
  • The closest side marker light we have for those dimensions is the LED Trailer Clearance or Side Marker Light with Reflex Reflector item # 328-K-51. This oval light measures 4" and has mounting holes that are 3" center to center.
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  • How to Pick Out Replacement MORryde Suspension Upgrade for EquaFlexon 2019 Grand Design 381M
  • It really comes down to knowing what Equaflex you have now or the dimensions of them and then picking out the matching MORryde kit. The part # MR87ZR is made to fit the most common dimensions as it is for 33 inch wheelbases and has 6-1/2 inches between the front and rear bolt holes with 3-1/8 inches between the holes vertically.
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  • Recommended Cover for a 2023 Grand Design Momentum 320G
  • The top of the line cover we have for your 2023 Grand Design Momentum 320G is the Adco SFS AquaShed RV Cover for 5th Wheel Toy Haulers item # 290-52256. This cover will stand up well against wind, rain, and snowy climates. The Adco Cover item # 290-52256 has zippered panels on the passenger's side and rear to offer access to to your trailer while in storage. The reinforced, elastic corners ensure a snug fit, reduce wear, and help against tears and snags. The cinch ropes at the front and...
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  • Will Fan-Tastic Vent Roof Vent Cover FVU1500WH Fit Fan-Tastic Vent On 2020 Grand Design Toy Hauler
  • The Fan-Tastic Vent Ultra Breeze Trailer Roof Vent Cover - 23" x 19.5" x 10.25" - White # FVU1500WH you were looking at will work with your Fan-Tastic vent on your 2020 Grand Design Momentum G-Class 5th Wheel Toy Hauler as it is confirmed to fit all Fan-Tastic vents, but without seeing the current mounting brackets I am unable to confirm if the brackets will be correct. If they are not you can remove them and use the brackets included with the # FVU1500WH. I also recommend using LaSalle...
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  • Will Wireless Cameras Work On My Toy Hauler
  • I suggest a hard-wired solution like the Rear View Safety Backup Camera System - 4 Camera Setup - Quad View Monitor # RVS-062710. It has a 7 inch view screen and supports up to four cameras that you can view at the same time. It also has a 120 degree angle of view so your not going to miss much if anything. Any enclosed trailer will offer resistance and interfere with any wireless signal. At 44 feet long that will push beyond the range of this particular camera system. A lot of wireless...
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  • Traction Material for Inside of Ramp Door on Toy Hauler
  • Other than the grip tape such as # PT24ZR or # PT57ZR we do offer an alternative that might work for you. I'd recommend using a rubber utility mat like part # DZ85009, which measures 6 feet by 3-1/2 feet wide. You might need to trim the mat to meet your needs, but this seems like a good solution. I'd recommend using contact cement to attach it to the inside surface of the ramp. Depending on what the inside surface of the ramp is and how the grit is applied, it might be possible to remove...
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  • Can the MORryde Cushioned 5th Wheel Pin Box Be Used w/ a Curt A20 5th Wheel Hitch?
  • Yes, the MORryde Cushioned 5th Wheel Pin Box item # MR84VR, item # MR27VR, and item # MR44HR are all compatible with the Curt A20 5th Wheel Trailer Hitch w/ R20 Slider item # C16541. However, you will need to know the type of pin box your 2020 Grand Design Momentum G-Class 5W Toy Hauler has to purchase the correct one. There are dozens of options and I have only listed the three most common ones above. I recommend taking a picture of the Lippert Sticker on your pin box and emailing it...
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  • Is Hydrastar Actuator Compatible with Integrated Brake Controller of 2019 Ram 3500
  • The integrated brake controller of your 2019 Ram 3500 is compatible with the Hydrastar actuator kit part # HSE7K-TR1 that you referenced. The parts are galvanized which protects from corrosion well. The rotors are made by Kodiak.
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  • Step Options for a Back Deck/Patio on a 2022 Momentum Grand Design 28G Toy Hauler
  • I do have a couple potential options for you, but we do not have any steps with a long platform on top to lay down on the deck of your 2022 Momentum Grand Design 28G toy hauler. We have the Econo Porch Trailer Step with Handrail and Landing # EHS-102-R. This is a step style that will not require you to attach anything to the deck. This can be folded up for storage, but does require that you remove some screws to get the braces off for storage. The other option are the Victory Step Manual...
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  • Recommended LED Red Clearance Light Less Than 1" Tall
  • I may have a solution for you, but the # MCL32RBB is a fairly low profile light at 1" so the only alternative would be a recessed mount light. I recommend checking out the Optronics LED Clearance or Side Marker Trailer Light - Chrome Plated - 2 Diodes - Red Lens # MCL71RB, which is also a 4" x 2" x 1/2" thick LED light that might fit the bill. At this time, this would be the only solution we have that is similarly sized and is less than 1" tall/deep.
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  • Recommended SumoSprings For 2019 Grand Design Momentum 354M W/ Tandem Overslung 7000lb Axles
  • I would be happy to help! Since the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 3K to 5K - Overslung # TSS-107-40 you were looking at are only rated for 3000-5000lb axles and your Grand Design Momentum 354M has tandem 7000lb axles you will want to go with the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Single Axle - 5K to 8K - Overslung # SS26MV. The # SS26MV are designed for trailers with 5000-8000lb axles that have axles underneath...
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  • 2021 Grand Design Momentum 350G Pin Box Replacement With MORryde 5th Wheel Pin Box
  • The MORryde Cushioned 5th Wheel Pin Box - Lippert 1621HD - 18,000 lbs Item # MR64VR is designed to replace your current Lippert 1621 HD pin box
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  • Disc Brake Conversion Kit for a 2019 Grand Design Momentum Toy Hauler
  • 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...
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  • Replacing the Lippert 1621HD with a Trailair Flex Air 5th Wheel Pin Box
  • Yes, the Flex Air 5th Wheel Pin Box, # LC328492 is a replacement for the Lippert 1621 rated18,000 lbs. and will match the bolt pattern to replace a Lippert 1621HD. However, I suggest you compare this to the weight rating of your trailer and if you need more than 18K, I recommend you select the Curt Air Ride 5th Wheel Pin Box, # LC158778 as is listed for the Lippert 1621HD being rated for 21K.
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  • Replacement Rim For 2020 Grand Design Momentum 353G
  • Based on Grand Design's parts list, the correct replacement rim for your 2020 Grand Design Momentum 353G is a 16" x 6" white spoke wheel with an 8 on 6-1/2" bolt pattern, and for that you'd need the following: - Dexstar Steel Spoke Trailer Wheel - 16" x 6" Rim - 8 on 6-1/2 # AM20768 For a valve stem with this use part # AM20906.
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  • Lippert Underchassis Double Bin Storage Unit for Toy Hauler
  • I do expect that the Lippert Underchassis Storage Unit, # LC236558 will fit just fine on your 2021 Grand Design Toy Hauler however, it is best to make measurements to ensure. This Storage Bin features overall dimensions of 99-1/2 inches long, 19-1/8 inches wide, and 10-1/4 inches tall. Between each of the mounting brackets there is a distance of 35-1/4 inches, on center. The bolt holes on each bracket are spaced apart 22-1/2 inches on center, front to back. I have attached an image to assist.
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  • Upgrading Equalizers and Cushioned Suspension Hangers for 2022 Grand Design Momentum 25G
  • I will need to know more info to pick out those components. To pick out replacement leaf springs I would need to know the length of your current springs so that I can match that with what we carry and I would need to know the width and height of your current equalizers. You should note that in the 7k and 8k axle springs we only have options that are 24-7/8 inches long like the part # DX74XR for the 8k springs and part # e64SR for 7k. Now if the wheelbase of your RV is 35 inches you'd...
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