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Expert Answers about Keystone Trailer Leaf Springs


  • Can 3-Leaf 4,000 lb Leaf Springs Replace 4-Leaf Springs
  • There will be no performance issues whatsoever going from leaf springs with 4 leaves to leaf springs with 3 leaves. So long as you have the correct length, the springs are going to work superbly. The 3-leaf, 4,000 lb leaf springs we have measure 25-1/4" from center of spring eye to center of spring eye: - 3-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 25-1/4" Long # e57SR
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  • How to Determine 7,000 lb Leaf Springs For Trailer
  • Nope, we have no way of knowing what leaf springs are on any trailer, but I can help you determine the right replacement springs. It's pretty easy, as all you need to do is measure your current leaf springs from center-to-center of the spring eyes. Leaf springs also flatten a bit over time, so you should go with ones that measure a bit shorter than what you currently have. The only 7,000 lb leaf springs we offer are the 6-Leaf Double-Eye Spring for 7,000-lb Trailer Axles - 24-7/8" Long...
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  • How to Determine Correct Replacement For Sagging Trailer Leaf Springs
  • It's pretty easy to determine the correct replacement leaf springs for your trailers, and there's different ways for double-eye springs and slipper springs. You do have to account for the sag, so go with ones that measure shorter than what you currently have. There is't a formula for this but a good rule for springs that have really sagged a lot is about 1/2" or so shorter. Then for double-eye springs all you need to do is measure your current leaf springs from center-to-center of the...
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  • Does Single-Leaf 6K Leaf Spring e34SR Have a Pilot Nub for U-Bolt Plate
  • The 1-Leaf Double-Eye Spring # e46SR does not have a center bolt as found on the comparably-rated 6K spring # e34SR. That center bolt head, or pilot, is not present on the single leaf spring because it is not needed as it is with multi-leaf springs. You can still install this spring using a u-bolt plate that has a center hole. Although these two springs share the same dimensions and weight capacity (25-1/4 x 1-3/4, and 6K) if you are replacing a multi-leaf spring you'll want to stay with...
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  • What Is The Purpose Of Steel band On Leaf Springs
  • The leaf springs are normally installed with the band forward of the axle, but it is not something that has to be done that way. The steel band is called the rebound clip. Their main purpose is to help keep the main leaf from breaking on a rebound. When the weight of a vehicle or trailer is on the spring, all of the leaves work together to support the spring above them. If the wheel drops for any reason the total weight of the axle falls on the main leaf if there are no rebound clips....
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  • Should All Trailer Leaf Springs be Replaced at the Same Time
  • When you are replacing a leaf spring you definitely want to replace all of the leaf springs on your trailer. The reason for that is leaf springs wear down over time and by replacing them at the same time ensures you will have even support on both sides of your trailer without any sag or lean. In regards to the correct replacements, that is going to depend on whether or not you have double-eye springs or slipper springs, your trailer's axle rating and most importantly, a number of measurements. The...
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  • Should Brand New 4k Trailer Leaf Springs be Aligned
  • Brand new leaf springs like your 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Long # e22YR should not arrive immediately out of alignment. This can happen over time occasionally but shouldn't happen immediately. You can either make a return or try and just bang them back into alignment using a hammer if you want to try that.
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  • Will Using Leaf Springs With A Different Amount Of Leaves Be Okay On My 2018 Vanleigh 5TH Wheel?
  • The number of leaves on a leaf spring is not the only determining factory in the amount of weight it can handle. The thickness of each leaf as well as what the leaf is made out of can affect the weight rating and performance of the spring. The Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2570 does use 5 leaves that are 3/8" thick. Each spring is rated for 3,500lbs which is 7,000lbs per axle. This kit upgrades your suspension by allowing the axles to act independently of...
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  • Does Changing From A 4 Leaf To A 6 Leaf Spring Add To Ride Height?
  • 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 height to the trailer.
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  • Option to Raise Trailer That Has Leaf Spring Suspension
  • I'm sorry but there are no Dexter leaf spring spacers, they do not make them. I'll give you an option to raise your trailer with leaf spring suspension though if you'd like to consider it, called an over/under kit. This moves your trailer's leaf springs to the top of your axle and lifts your trailer approximately the same amount as your axle's diameter plus the height of the leaf spring pack, and the correct kit depends on your axle diameter: - 2-3/8" Round Axle: Dexter Trailer Springs...
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  • Determining If Open Eyed Slipper Leaf Spring Is Needing Replaced
  • Your trailer uses an open eye leaf spring like # e24SR. Over time as the leaf spring softens the gap you are seeing will get bigger. As long as the leaf spring is not falling off the hanger when you raise the trailer weight off the axle they do not need replaced unless visibly damaged. Since the overall length of the spring changes as the spring wears I recommend measuring the length of your spring on the radius of the spring(see image). Since this measurement remains the same it ensures...
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  • How to Determine Correct Length Leaf Spring For 7,000 lb Axle
  • We don't have any way of knowing the length of leaf spring on any trailer, so to determine if the 7,000 lb # e64SR is correct, you'll need to measure yours from center eye to center eye. When doing that, keep in mind that leaf springs flatten out over time, so you'll want to pick leaf springs that are a bit shorter than the measurement you get. So if yours measured around 25-1/4", for example, you would go with the 6-Leaf Double-Eye Spring for 7,000-lb Trailer Axles - 24-7/8" Long # e64SR.
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  • How to Determine Where to Put Axles on Trailer
  • I have added a link to a help article for you which has the formula you need that allows you to determine exactly where to position your axles on a trailer. Using this formula, based on measurements you'll need to take and the weight of the trailer, will determine where you position the axles. As for the hanger kit that depends on the size of your axle and your leaf springs. For example, the Tandem-Axle Trailer Hanger Kit for Double Eye Springs # APT5 is for 2,000-lb to 7,000-lb tandem-axle...
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  • How to Determine SumoSprings For Jayco Travel Trailer
  • It looks like your trailer has a GVWR of just under 5,000 lbs, which narrows down the choices, so to determine the correct SumoSprings you just need to know if your axle sits above the leaf springs or below the leaf springs, as well as the clearance between the top of the spring plate and bottom of trailer frame. - Axle Below Leaf Springs: SumoSprings Trailer Helper Springs # TSS-107-40 (Clearance between top of spring plate and bottom of trailer frame must be between 5-5/16" and 6-1/2") -...
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  • How to Determine Correct Leaf Spring Replacement For Gulfstream 19RBS Vintage Cruiser Travel Trailer
  • I can help you determine the right replacement double-eye leaf springs for your Gulfstream 19RBS Vintage Cruiser travel trailer, though we don't have any way of knowing what specific ones you need. It's pretty easy though, as all you'll need to do is measure your current leaf springs from center-to-center of the spring eyes, and you also need to know the weight rating of your axle (which should be printed on a sticker or tag on the axle itself). Leaf springs also flatten a bit over time,...
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  • How to Determine Correct Double-Eye Leaf Spring Replacement for 6,000 lb Axle
  • I can tell you how to determine the correct leaf spring replacement, though those numbers don't have anything to do with size. They are probably a serial number or some other type of manufacturer ID but nothing of consequence. Instead, the best way to determine if a double-eye spring will fit is by measuring the length from the center of the spring eye to the end of the spring, as you can see in the accompanying diagram (the best way to get an accurate length of a leaf spring is with the...
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  • Leaf Spring For 2,000 lb Trailer Axle That is 20-3/8 Inches Long
  • We do have the SP-169275 leaf spring, which is a 20-3/8" long leaf spring for 2,000 lb axles. We have it as a different part number but is exactly the same thing, and what you are looking for is the following: - 3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles - 20-3/8" Long # e84SR
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  • Option Because No Trailer Leaf Springs are Long Enough
  • You cannot use the 30 inch leaf springs as they won't be long enough; you were correct about where the leaf spring holes needed to be. What you will likely have to do is cut off your existing hangers and weld on new ones to match a new leaf spring size. For example if you have a single axle trailer with 3-1/4" front hangers and 1-1/4" rear hangers use the Single-Axle Trailer Hanger Kit for Double-Eye Springs # APS4. You need to be sure to place them correctly and I have attached an article...
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  • Leaf Spring for 5,000 lb Trailer Axle
  • All of our leaf springs like the 4-Leaf Double-Eye Spring for 5,000-lb Trailer Axles - 25-1/4" Long # e28SR are sold individually. For a single axle you would need two.
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  • Purpose of Rebound Clips on Double Eye Leaf Spring
  • The rebound clip on a leaf spring such as double-eye spring # e54SR will be positioned with about 1/2-inch of the shortest leaf sticking out past the clip. The clips do two things: they help maintain alignment of the various spring leaves but more important they also prevent the shorter leaves from banging against the top leaf. For instance, if you were to drive over a deep pothole, for an instant the wheel and axle will drop but as soon as the tire climbs back out of the hole the spring...
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