Should 7,000 Pound Axles be Upgraded to 8,000 Pound Axles on 2018 Grand Design Momentum 351
Question:
What options are there for upgrading tandum axles to at least 8k if not more. Trailer is 16,500k pounds. Dexter 7658660 coming off. Thanks 2018 Grand Design 351 Momentum
asked by: Tom N
Expert Reply:
If you need an axle replacement because one is damaged, you will be fine sticking with the 7,000 lb axles you currently have. All you would need to do is get the hub face to hub face measurement to choose the right axle length. We have 94" # 8327864 and 95" # 8327834 7k Dexter axle replacements. Unfortunately, we do not have any 8,000 lb axles available.
I suspect the reason you want to add 8k axles is based on the GVWR of your 2018 Grand Design Momentum 351. The one thing you need to take into account here is that the axles are only supporting part of the load. You have to consider the tongue weight as well. The dry hitch weight for your trailer is listed as 2,785 lbs. Even if you don't factor in the loaded tongue weight that puts you under 14,000 lbs if you are at the GVWR of 16,500 lbs.
When it comes to upgrading axles you also need to take into account other components of the trailer. You're always rated to the weakest component, so even if you were to upgrade axles you'd have to do the springs, wheel/tires, etc as well.
Products Referenced in This Question
Dexter Trailer Axle Beam with E-Z Lube Spindles - 95" Long - 7,000 lbs
- Trailer Axles
- Leaf Spring Suspension
- Standard Grade
- No Hubs
- 7000 lbs
- Spindles Only
- 80 Inch Spring Center
- 95 Inch Hub Face
- No Drop or Lift
- Dexter
more information >
Dexter Trailer Axle Beam with E-Z Lube Spindles - 94" Long - 7,000 lbs
- Trailer Axles
- Leaf Spring Suspension
- Standard Grade
- No Hubs
- 7000 lbs
- Spindles Only
- 79 Inch Spring Center
- 94 Inch Hub Face
- No Drop or Lift
- Dexter
more information >
Product Page this Question was Asked From
Lippert Bolt-On Shock Kit w/ Heavy Duty Gas Shocks - 5,200-lb to 7,000-lb (3") Overslung Axle
- Trailer Suspension Parts
- Leaf Spring Enhancement System
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Shocks
- Round Axle - 3 Inch
- Single Axle
- Lippert
more information >
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