SumoSprings Maxim Custom Helper Springs for 1999 National 36 Foot RV on Ford F-53 Chassis
Published 06/26/2020
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Here is the additional information for you The GVWR is 20500 lbs The rear GAWR is 11,000 lbs Chassis info - 3FCMF53S1XJA12015 Thank You
asked by: Jon-mark M
Expert Reply:
For your 1999 National 36 foot RV on Ford F-53 chassis, if you have the Tropi-Cal it is 18,0000 lbs gvwr. If the Topical is what you have then the SumoSprings Maxim Custom Helper Springs - Rear Axle # SSR-187-40-1 is what you will want. If it is between 20,000 and 22,000, then you will use the SumoSprings Maxim Custom Helper Springs - Rear Axle # SSR-180-54-1. If it is 24,000- 26,000 lbs then you will use # SSR-183-54-1.
If you check your gvwr which will be on your frame or inside a cupboard door in some cases, you will find what is the correct fit for your chassis. If you can give me the model, I can confirm the fit for you.
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SumoSprings Maxim Custom Helper Springs - Rear Axle
- Vehicle Suspension
- Towing/Load Leveling
- Bump Stops
- Suspension Only
- Standard Duty
- Rear Axle Suspension Enhancement
- SuperSprings Intl
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Jon-mark
6/26/2020
Here is the additional information for you The GVWR is 20500 lbs The rear GAWR is 11,000 lbs Chassis info - 3FCMF53S1XJA12015 Thank You