Review of etrailer Trailer Leaf Spring Suspension - Leaf Springs - e68SR Video

From what I could find on the Dexter 072-042-00 leaf spring, it appears to be the standard 1-3/4 inch wide double eye spring which is 25-1/4 inches long and rated up to 1,750 pounds (per spring). With that said, the 4-Leaf Double-Eye Spring for…

For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind…

You want leaf spring shackles to be at a slight angle as that prevents the springs from flipping around to the other side of the equalizer over uneven terrain. I attached a picture that shows what the angle is typically like.

To correctly measure a leaf spring, you'll want to jack the trailer up on jack stands so the axle is hanging freely, then measure directly across from the center of one spring eye to the other, as shown in the provided diagram. The height of…

You could potentially replace your leaf springs with a larger capacity spring but will need to match the length of your current leaf springs to avoid having to remove and reinstall the hangers and rest of the suspension system, which is a giant…

I do not recommend going with 4,000 lb leaf springs on your boat trailer with a GVWR a touch less than 3,000 lbs. It will make the ride bouncier than need be, but a 3,500 lb spring should do well, assuming when your boat is on the capacity is…

Yes, those springs would be good replacements for your existing 3,500 lbs springs. In order to get an accurate measurement out of your current leaf springs you will need to jack your trailer up and let the suspension flex. Once you get all the weight…

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

For 1/2 inch trailer u-bolts that attach to axle the recommended torque value is between 45 and 70 ft lbs of torque.

Looking up the information for your 2021 KZ Sportsman 301BHKSE I see that they use axles rated for 4,000lbs. For this we have either the 26" #e48SR or 25-1/4" #e93SR leaf springs. You will need to measure the springs on your KZ to verify…

You can still use axle #T3584F-EZ-8974 if the spring seat centers match up like you said. The hub face to hub face measurement is only off 1/2 inch on each side which isn't going to cause you any problems.

Thank you for providing that information. Leaf springs like the ones you have now typically match the axle capacity on your trailer. Although adding leaf springs with a slightly higher capacity won't hurt, it also is not necessary. Based on the…