Can I Upgrade My 3,500 lbs Axle and Keep the Same Hubs and Lug Pattern?  

For higher-rated leaf springs that match the length on your existing sets, I recommend taking a look at the 3-Leaf Double-Eye Spring #e57SR. This double-eye spring features an eye-to-eye length of 25-1/4 inches and a spring width of 1-3/4 inches. It…

It's okay to replace leaf springs with ones rated for more weight and pretty common to do so but keep in mind, the higher you go the rougher the ride will be. If you have a utility trailer then I'd probably opt for the higher rated 5,000 lb…

We have exactly what you are looking for. Since your leaf springs are right around 25-1/4" long with no weight on the axle I recommend the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles #e57SR which will give you the extra support you are…

If you are having issues with leaf springs breaking then you first need to verify the weight capacity of the leaf springs which should be based on the axle capacity. If the leaf springs are rated appropriately then you will need to make sure the…

There are suspension upgrades available for the 2007 Keystone Everest 344J but they are not designed to raise your carrying capacity of the fifth wheel trailer. The carrying capacity of your trailer is set by the manufacturer and cannot be changed.…

Hey Kevin thanks for your question. There is not much downside to going with the 5,000 lb springs instead of the 3,500 lb. A higher rated spring may make the ride a bit more "chunky" at times, since the spring would not flex as easily.…

I can help you determine the right replacement double-eye leaf springs for your Keystone Hideout, though we don't have any way of knowing what specific ones you need. It's pretty easy though, as all you need to do is measure your current leaf…

Yes the 4,000-lb leaf spring is compatible with a 3,500-lb axle. There are a couple of important measurements. Spacing from eye to eye on the spring when unloaded with no weight on the axle. Inner eye diameter of the spring roll Spring width from…

Hi James, You can swap out the leaf springs to help reduce wear but you'll most likely notice a little bit stiffer of a ride, but not enough to really matter. To find the correct replacement you'll first need to measure the leaf spring so…

I definitely recommend replacing your 3,500 lb 26 inch leaf springs with the 26 inch 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles #e22YR. The 4,500 lb would be too stiff and your ride would suffer so the better option by far are the 4k…

The spring capacity is the weight the spring is designed to support. For example the 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long #e57SR you were looking at is designed for 4000lb axles, meaning each spring can support…

Yes, going from a 4 leaf to a 6 leaf spring would add slightly to your ride height. For example, if the current 4 leaf spring has 3/8" thick leaves, and you go to a 6 leaf spring with 3/8" thick leaves, you would be adding 3/4" of…