Is There Lippert Center Point by Trailair Air-Ride Suspension Upgrade for Grand Design Momentum 398M

Question

Question:

Looking at the Lipert air ride axle suspension kit. Do they have a kit for a three axle. Grand design momentum 398MR 5TH WHEEL.

asked by: Brian R

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Expert Reply:

Yes, the Lippert Center Point by Trailair Air-Ride Suspension Upgrade part # LC1565401 is designed specifically for triple axle trailers so it will work great on a Grand Design Momentum 398M.

expert reply by: Conner L

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Answer 1

I spoke with my contact at Lippert and he informed me that the Center Point part #LC1565391 will support a 21,000 lb trailer. That being said, since you have a triple axle trailer you would want the part #LC1565401 instead. Bag failure is extremely…

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Answer 2

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…

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Answer 3

**UPDATE IN COMMENTS** Keep pumping grease into the fittings until you start to see a little grease seeping through the outer bearing. This means that you have packed as much grease as will fit into your spindle. Be sure to check that the grease…

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Answer 4

The Replacement U-Bolt w/Nuts #11-65 will fit the 7-Leaf Slipper Spring #e37SR. This u-bolt has a 3-1/2" opening inside the bolts. It is 8" long from the inside of the u-bolt to the end of the threads. The U-Bolt Plate #117581 will work…

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Answer 5

Yes, you can replace a two leaf spring stack with a three leaf spring stack so long as your center to center (double eye springs only) measurement matches but please note the loaded and unloaded as well as the new and used center to center…

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Answer 6

Hey Dominic, the closest option for a U-bolt is the part #11-65 which is 8 inches long and is 3-1/2 inches inside to inside like you can see in the attached picture.

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Answer 7

Hey Tom, all I really need to know to pick out the correct bearings would be the axle capacity of your 2023 Grand Design 390RK. Since we happen to already know you have 8k axles the correct bearing kit would be the #DX38ER which comes with new…

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Answer 8

The U-bolts on the U-Bolt Kit for Mounting 8,000 lb Round Trailer Axles #APUBR-35 are 9/16". The torque specs for 9/16" bolts on trailer suspension 65 ft/lbs - 95 ft/lbs. Torque specs depend on bolt size: 1/2" bolts: 45 ft/lbs - 70…

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Answer 9

It sounds like you are asking if you can use the Dexter Trailer Axle Beam part #8327826 to replace the axle beam included with Dexter Trailer Axle with Electric Brakes part #8327816-EB and reuse the braking assemblies and hubs/drums. If that is the…

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Answer 10

There unfortunately isn't a package for just the rotors and brake pads together so you would need to purchase the rotors and pads separately in order to avoid paying for new calipers as well. To find the correct rotors we'll need a bit of…

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Answer 11

It is recommended to install 3 of the MORryde X-Factor Crossmember for LRE, RE, or TRE Leaf Spring Suspension #MR99ZR since you have 3 axles. I have heard of people installing just one or two if they have the majority of the weight on those axles,…

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Answer 12

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Is There Lippert Center Point by Trailair Air-Ride Suspension Upgrade for Grand Design Momentum 398M

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