3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 23-1/8" Long

Ask the Experts about this Universal Group Trailer Leaf Spring Suspension

• Can Double-Eye Springs for 3,500 lb Axle be Mounted on Top of Axle
  Yes, you can mount the 3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 23-1/8" Long # SP-216275 on top of your axle. I can't quite tell from your photo but you either have an overslung axle or are using an over/under kit, the Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00. With either circumstance you can mount these leaf springs on top like in your photo without issue. I have added links to video reviews for you to check out as well.
  view full answer...
• Tandem Axle Trailer Spring Hanger Kit and 6K Leaf Springs
  The hanger kit I recommend is part # APT3HD which includes front, center and rear hangers, equalizers and bolts. This kit is good for axles up to a 7K rating and most 3-inch diameter axles are rated for 6000 to 7200-lbs. The linked video will let you see the kit contents. Please note the kit does not include parts to mount the axle to the suspension; for that use # APUBR-8, one kit per axle. For double-eye leaf springs please refer to the linked page that displays all 6K rated springs...
  view full answer...
• Replacement 23-1/4 Inch Leaf Springs for 1984 Prowler Trailer
  If your 1984 Prowler Trailer has 3,500 pound axles, I recommend sticking with a 3-Leaf spring like the Universal Group 3-Leaf Double-Eye Spring # SP-216275 to replace your 23-1/4 inch springs. This leaf spring measures 23-1/8 inches from eye to eye, which will give you a much better fit to replace the existing springs on your trailer. A leaf spring of closer to 25 inches might be too long for the current hanger setup on your trailer. Older leaf springs will elongate a bit over time,...
  view full answer...
• How to Determine Hanger Spacing on Tandem Axle Trailer
  That depends on the width of the equalizer used in the suspension setup. Let's say you were using the tandem hanger kit part # APT8 though which has a 7-1/2 inch wide equalizer though. The distance between the hangers would be 28 inches using the # SP-216275 which measures overall 23-3/8 inches. Basically with this spring you want to have 24-1/4 inches between the hangers on the outside of the setup and the bolt hole center of the equalizer side it attaches to using shackles. So roughly...
  view full answer...
• How to Chose Correct Replacement Leaf Spring for Trailer
  To find the correct replacement leaf spring for your trailer you need to know both the weight rating of your axle and more importantly, the length from center of one eye to the center of the other eye. For example, the 3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 23-1/8" Long # SP-216275 measures 23-1/8 inches from center of one eye to the center of the other eye. Keep in mind that springs can elongate over time so your springs may not be that exact measurement. For 3,500...
  view full answer...
• What is Recommended Clearance between Trailer Axle and Frame
  The recommended clearance with leaf spring suspension on an unloaded trailer is between 2 - 2-1/2 inches. You should have sufficient clearance with your loaded trailer, as leaf springs only tend to deflect 1-1/2 inch when carrying a load.
  view full answer...
• Replacement for 23-1/4 Inch Long, 2 Inch Wide Double Eye Leaf Spring
  So long as other dimensions match, you can replace your 2 inch wide leaf spring with the narrower 1-3/4 inch leaf spring, though if you have any added movement with the narrower spring, which is possible, you will want to change out your hangers as well. The closest we have in length to the spring you mentioned is the 3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles # SP-216275 which measures 23-1/8" long from center eye to center eye. That said, they are rated for 3,500 lb axles,...
  view full answer...
• 3,500 lb Leaf Spring Availability that is 23-1/8 inches Long
  If you dimensions all match the part # SP-216275 except the height from the pin to the eyes is a bit less (they flatten out over time), this spring will still fit and work well. Especially if you have a load on your trailer as well. The two big things to use when picking out leaf springs is the length of the spring as well as the axle capacity. This is for a 3,500 lb axle. If that matches your trailer this is just what you need.
  view full answer...
• Hanger Spacing for 3,500 Pound Axle Leaf Spring # SP-216275 on Tandem Axle Trailer
  I think your idea is right on the money. Take the information from the 25-1/4 inch spring hanger spacing and subtract 2 inches. The subtraction will be 1 inch from the front hanger to the center hanger and another 1 inch from the center hanger to the rear hanger. Both of those measurements should be roughly 28-1/2 inches if using hanger kit # APT3. Using u-bolts for 3 inch diameter trailer axles is not a good idea on an axle that is 2-3/4 inches in diameter. It can allow for movement...
  view full answer...
• Ideal Leaf Spring Hanger Spacing for Tandem Axle Trailer Using # SP-111275 6000 lb Leaf Springs
  The spacing will depend on the axle diameter and on which particular spring hanger kit you use. If you have a 6000 lb 3 inch diameter axle, and you're using the # APT5 hanger kit which includes 7-3/4 inch equalizers and 2-5/8 inch shackle straps (which are the correct size for dual axle trailers, 3-1/8 inch shackles are usually used on single axle trailers) , the center to center distance between the front and center and center and rear hanger is 29-1/2 inches. The center to center axle...
  view full answer...
• Trailer Suspension Hanger Kit Spacing for a Tandem Axle Trailer
  I would need to know the axle capacities to be sure but I can venture an educated guess. The only tandem axle double-eye leaf spring hanger kit we have that includes 8 inch equalizers is # APT1. With this kit, the center of the forward hanger to the center of the rear hanger would be 29-1/2 inches. It is the same from the center hanger to the rear hanger on center. That would make the center to center distance between the 2 axles 34 inches. I have included a picture showing the measurements...
  view full answer...
• Hanger Spacing When Using 23-1/8" Double-Eye Leaf Spring on Single Axle Trailer
  On a single axle trailer you will want to have a hanger spacing of around 22-3/4 inches when using the 23-1/8 inch long Double-Eye Spring # SP-216275. This will allow that rear shackle to correctly lean away from the axle for proper suspension travel. I have attached a short video review on this leaf spring that you can check out as well.
  view full answer...
• How to Determine Hanger and Axle Spacing Building a Trailer with 26 Inch Long Double-Eye Springs
  On a spring that is 26 inches eye to eye on center and a single axle trailer you will want the hangers to be up to 1/2 inch less than the spring length so 25-1/2 inches on center between the front and rear hangers. For the ideal axle position you can follow the formula in the picture I have included. It covers single or tandem axle set ups.
  view full answer...
• Replacement Suspension for Tandem Axle Trailer with 3500 Pound Axles and 24 Inch Double-Eye Springs
  For 3500 pound axles with 24 inch springs the # SP-216275 is what you need. Springs stretch as they wear out so it's very normal for your measurement to be longer than the new springs. Also, the Tandem Axle Equalizer Kit # AP233 is also great for you. The 1/4 inch extra length isn't going to be a factor and we don't carry 5-1/2 inch equalizers that are 2 inches tall.
  view full answer...
• Replacement Double Eye Leaf Springs For Older Snowmobile Trailer
  I have a solution for you, but we do not carry any leaf springs that are 1-1/4 inches wide. It is possible that the springs are specific to the trailer manufacturer or came from a specific application. Based on the dimensions you provided, the closest match we have is the 3-Leaf Double-Eye Spring # SP-216275. This leaf spring measures 23-1/8 inches from center of eye to center of eye. This spring is 1-3/4 inches wide. If you do not have room to add a wider spring to your spring...
  view full answer...
• Correct Replacement Leaf Spring for 2,800-lb Dexter Axle
  The distance between the spring eyes should be measured from the center of each eye. I've attached an image showing the correct locations to measure to obtain leaf spring measurements. However, from the given information, it sounds as though you have the correct replacement part with the 3-Leaf Double-Eye Spring # SP-216275. I've also attached an article on double-eye trailer suspension systems for you.
  view full answer...
• Axle and Suspension Hanger Placement on Tandem Axle Trailer
  The placement of the axles is going to depend on the gross trailer weight. I have included a picture that shows how to determine where the center point should be between the axles. Placement of the hangers is going to require mocking up the hangers to determine where they are going to fit. But as a guide you can use the following as a starting point: Distance between front and center hangers and between center and rear hangers, approximately 29-1/2 inches (74.93 centimeters).
  view full answer...
• Replacement Leaf Springs, Equalizers, Shackle Straps, and Bolts for a 2002 Fleetwood Mallard 20N
  I have attached a parts list of everything you need including quantities below to replace the leaf springs, equalizers, shackles, and bolts on your 2002 Fleetwood Mallard 20N. Leaf Springs: Double-Eye Spring part # SP-216275 (4) Equalizers: Curved Equalizer part # TREQ104 (2) Shackle Strap: Shackle Strap part # TRSL225 (8) Wet Bolts: Step Wet Bolt part # 34007-187-00 (14) If you need any other parts or tools to complete the process please let me know and I would be happy...
  view full answer...
• How to Get Correct Length Measurement of Trailer Leaf Springs
  I'm assuming that you're wondering how much the leaf springs flatten out over time. Usually it won't vary by more than 1/2 inch or so, but there's a sure way to get an accurate measurement. The best way to get an accurate length measurement for a leaf spring is to jack the trailer up so that the axle is hanging free. You can then get a center eye to center eye distance that'll be right on the money. By letting the axle hang, you'll be able to get a correct measurement.
  view full answer...
• Replacing a Broken Leaf Spring on a 2007 Starcraft 2406 Pop Up Trailer
  When replacing a broken leaf spring on your trailer there are a few things to note. The most important part about a leaf spring being compatible with your trailer is that it is rated for at least the same weight capacity as your trailer axle. If it is rated lower you could overload it. A higher rated leaf spring would work but it would also make your trailer suspension stiff. Other than weight capacity you simply need to make sure that it has the correct width, is the same style, and...
  view full answer...
• Replacement Double-Eye Leaf Springs for Tandem Axle Boat Trailer
  We can help you with new double-eye leaf springs for your boat trailer with 3500-lb tandem-axles. Usually axles will have a plate or sticker that tells you their weight rating. Old, worn springs tend to stretch. If you remove one of your leaf springs and measure its eye-to-eye dimension it is entirely possible that it will now measure longer than it was when installed. If the spring is still installed in the suspension it is hard to get an accurate measurement unless you jack up one...
  view full answer...
• Replacement Leaf Spring Recommendation for Trailer with 3,500 lb Axles and Length 23-1/4
  Springs tend to stretch over time as they wear out and flatten. This means that you need to go with springs that are slightly shorter than what your old springs measure. For that the best option is the 3,500 lb leaf spring part # SP-216275 which measures 23-1/8 inches. This will work great as a replacement for the spring dimensions you mentioned. Around 1/4 inch shorter than the worn out spring is the best option typically. But that's not a hard and fast rule so for your situation the spring...
  view full answer...
• Broken Leaf Spring Replacement Recommendation for 23-1/8 inch 2,500 lb Axle Springs
  If you don't want to move your current hangers we have a 3,500 lb axle leaf spring part # SP-216275 which would fit and would work well. The ride might be a bit stiffer but it would still work well. The 2,500 lb axle springs we have are longer like the # SP-219275 which is 25-1/8 inches long and would require moving you hangers. You'll want to replace the springs as a pair for the axle. Since the springs would be different rating you'll want to replace all of them so they all match.
  view full answer...
• Should Trailer Leaf Springs Have Higher Capacity Than Axles
  I recommend keeping the springs rated for 7,000 pounds if your trailer's axles are rated for the same. You have to keep in mind that a portion of the trailer's weight (Likely 10 to 15 percent) is on the hitch and therefore the tow vehicle's rear axle and not on the trailer axels. If you use 9,000 pound springs and overrate them you're likely to have a rough, stiff ride. Springs are rated by the axle capacity. The leaf springs for 3,500 pound axles are: # SP-216275 which are 23-1/8...
  view full answer...
• Can a Curved Equalizer be Replaced with a Straight Equalizer
  Different trailer configurations require different equalizers. It all depends on the springs, axle spacing, hanger spacing, height needed and so on. In many cases if you want to change the equalizer to something with different measurements you would also have to replace other components such as the hangers and springs in order to keep everything in the right location for that specific trailer. I have included some links to our help articles on double-eye and slipper spring trailer suspension...
  view full answer...
• Selecting Replacement Trailer Leaf Springs
  All of our trailer leaf springs are displayed on the linked page. These include both types, double-eye springs like # SP-216275 and slipper springs like # SP-264275. You can use the filters on the page to select the type you need. Springs should be selected based on the axle weight rating AND the spring dimensions, both width and length. You can refer to the linked articles for help in selecting appropriate springs for your trailer. Do note that very well-worn springs can become...
  view full answer...
• Replacement Leaf Springs for 18 Foot Equipment Trailer w/ Tandem 3500 lb Axles
  Since trailer leaf springs can flatten out over time, you'll want to start by getting the most accurate measurement you can, measure from the center of the spring eye to the other center eye while the axle is hanging. You're probably going to need to use the # SP-212275 as a replacement. I'd recommend staying with your current setup, but I would check your shackle links to make sure they're still in good shape, the bolt holes should still be round, not wallowed out.
  view full answer...
• Replacement Leaf Spring Needed for a 2011 Forest River Wildcat 29BHS Travel Trailer
  From what I could find I believe that your 2011 Forest River Wildcat 29BHS has tandem 3,500 lb axles. Although I don't know what length leaf spring you are needing you will just need to compare the length of your springs with what we carry (as we carry the most common options). We offer replacement leaf springs that measure 23-1/8" long # SP-216275, 25-1/8" long # SP-212275, and 27" long # SP-210275. Please note that these measurements are taken from center eye to center eye (the C measurement...
  view full answer...
• Components Needed To Build Tandem-Axle Lawn Mower Trailer
  You did not say what the expected weight is for the trailer and the lawn mowers with other items like trimmers, gas cans, etc, we can only estimate the size axles, and springs you would need. The highest capacity axles we offer are for 3,500 lbs and measure 89 inches hub face to hub face. That is a bit longer than the 7 ft you mentioned you wanted. You did not say if you planned on adding brakes to the trailer. If your loaded trailer weighs more than 50 percent of the vehicle you are...
  view full answer...
• Replacement Trailer Leaf Springs for 2005 Terry M-250RKS with 3,500 lb Axles
  Most likely the best leaf spring option we'll have for your 2005 Terry M-250RKS is the # SP-216275. This depends on how you measured your leaf springs though. This spring measures 23-1/8 inches from eye center to eye center. If you measured your springs with the weight of the trailer on the suspension they would have stretched out slightly. When you combine that with the fact that old springs typically stretch slightly over time the # SP-216275 could easily be the correct size. Worse case...
  view full answer...

Do you have a question about this Trailer Leaf Spring Suspension?