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Start With the Chassis
The body manufacturer does not determine suspension fitment.
Motorhome Parts Guide
Motorhome Helper Springs and Load Support
Here at Motorhome Shocks, we carry many different products to help add support for towing and hauling. Chances are, if your vehicle squats in the rear when towing or carrying heavy loads, you have gone beyond what the stock suspension was designed to support. This can also be caused by worn out or weak suspension parts, such as coil springs or leaf springs.
Load Support Does Not Increase Vehicle Ratings
Helper springs and air springs can reduce sag, restore suspension travel and improve stability within the vehicle's limits. They do not increase GVWR, GAWR, wheel ratings, hitch ratings or tire capacity.
Compare the Main Load-Support Types
| Product Type | Best For | Adjustment | Important Tradeoff |
|---|---|---|---|
| Air springs | Loads that change from trip to trip | Air pressure can be adjusted | Requires pressure checks; compressors and controls are optional |
| SumoSprings | Maintenance-free progressive support | No manual adjustment | Density and clearance must match the application |
| Timbren SES | Simple progressive support under heavier compression | No manual adjustment | Loaded and unloaded gap affects engagement |
| Steel helper springs | Leaf- or coil-spring applications with a verified fitment | Varies by design | May change unloaded ride height or firmness |
Diagnose Sag Before Adding Support
Confirm actual axle weights, tire capacity, spring condition and ride height. A damaged or worn factory spring should be repaired rather than masked by an add-on product.
Choose the System
Before You Order
Start With the Symptom
Identify the movement or load issue before choosing a product category.
Verify Before Ordering
Model year, GVWR, axle position and modifications can change the application.
Related Motorhome Guides
Frequently Asked Questions
Will Motorhome Helper Springs and Load Support fit every motorhome?
No. Motorhome suspension parts are chassis- and often axle-specific. Confirm the chassis manufacturer, chassis model year, GVWR and suspension layout.
Do I need to inspect the RV before ordering?
Yes. Tire pressure, alignment, worn bushings, loose steering parts and damaged mounts can change the diagnosis or prevent a new part from working as intended.
Where should I start if I am not sure what I need?
Use the vehicle selector with your chassis information, then describe the exact motion or load problem. Contact Motorhome Shocks & More if two applications appear similar.
Confirm Fitment Before You Order
Use the chassis information, model year and axle details from your motorhome, or call us when two applications look similar.