3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles

Redline Trailer Suspension - PR3

This 3-leaf double-eye spring is 25-1/4" long x 1-3/4" wide. It is designed for use with 3,500-lb trailer axles.

Features:

• Flexes to absorb road shock and provide smooth ride
• Reduces wear and tear on trailer
• Ensures level ride on bumpy and uneven surfaces
• Mounts to trailer frame with hangers or a hanger kit (sold separately)
• Includes nylon bushings

Specs:

• Number of leaves: 3
• Spring width: 1-3/4"
• Eye diameter: 9/16"
• Spring capacity: 1,750 lbs
• Axle capacity: 3,500 lbs
• Dimensions: see table

Leaf springs are an integral part of your trailer suspension system. The double-eye spring is suspended at the ends by hangers that attach to its eye or, in the case of tandem-axle or triple-axle systems, into hangers in the front and rear and an equalizer or equalizers in the center. To determine the type of hangers or hanger kit you need, you must know the specific type of leaf spring you have, as well as your axle diameter and capacity. Depending on the hanger kits used with them, springs can be configured to work for single-, tandem- or triple-axle applications.

Please Note: To ensure proper axle alignment and suspension performance, leaf springs should always be replaced in pairs.

PR3 Trailer Double Eye Spring - 3 Leaf - 1,750 lbs

Video of 3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles

Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.

Redline Trailer Suspension PR3 Review

Customers compare PR3 to these similar products

4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles$20.95

3-Leaf Double-Eye Spring for 2,500-lb Trailer Axles$22.95

3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles$24.95

3-Leaf Double-Eye Spring for 2,000-lb Trailer Axles$14.99

4-Leaf Double-Eye Spring for 4,800-lb Trailer Axles$24.95

Customers Who Purchased This Trailer Suspension Also Bought...

Shackle Bolt with Locknut for Double-Eye Springs - 3" Long $3.08

Wet Equalizer Bolt with Locknut and Grease Zerk for Double-Eye Springs - 3" Long $3.08

Shackle Strap - 2-5/8" Long $0.65

Shackle Strap - 3-1/8" Long $0.70

Shackle Strap - 2-1/4" Long $0.70

Ask the Experts about this Redline Trailer Suspension

• How to Select the Proper Leaf Springs for Stracraft Pop-Up Camper
  
• To make the proper recommendation for your trailer we will need to know the weight capacity of the trailer axle or axles, and the three measurements on our trailer leaf springs page, see link. The Trailer Leaf Spring 1750 lbs, 3 Leaf, item # PR3 may work on your trailer, but if the weight capacity is too low or high you will have reduced towing performance and possibly an unsafe condition. If you know or can find the weight capacity of the axle on your trailer then we can find the correct spring
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• How To Determine Replacement Leaf or Slipper Spring for 1996 Nitro Bass Boat Tandem Axle Trailer
  
• You will need to measure the distance from the center of each mounting point on the end of the leaf springs. If you look on the page for part # PR3, the measurement you will need is measurement A as shown in the diagram. If you have slipper springs, you will need to take 4 measurements. 1. The distance from the center of the mounting hole to the end of the slipper spring 2. The distance from the center of the mounting hole to the highest point of the slipper spring. 3. The height from cen
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• Will these Leaf Springs work for my Tandem Axle Boat Trailer?
  
• To make the proper recommendation for your trailer we will need to know the weight capacity of the trailer axle or axles, and the three measurements on our trailer leaf springs page, see the link (scroll down to Replacing Springs Section). The Trailer Leaf Spring 1750 lbs, 3 Leaf, item # PR3 may work on your trailer, but if the weight capacity is too low or high you will have reduced towing performance and possibly an unsafe condition. If you know or can find the weight capacity of the axle
  view full answer...


• Recommendation For Leaf Springs and Shackle Straps on a 2001 King Boat Trailer
  
• When replacing the leaf springs on your boat trailer you will need to match all of the dimensions and the spring capacity as closely as possible to the original spring. Usually the measurement from eye to eye will lengthen and the height measurement will decrease with wear. See picture I have included that will show the measurements you will need to match to replace your leaf springs. The number of leaves in a spring pack does not have to remain the same as long as the weight capacity is inli
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• Placement of Front and Rear Hangers When Building a Tandem Axle Trailer
  
• To determine the location for the front and rear hangers on your tandem axle trailer you will first need to make sure that you have the correct center point for your equalizer hanger. The center point of your equalizer hanger needs to be located where you will have 60 percent of the frame of the trailer in front of the center of the equalizer hanger and 40 percent behind the center of the equalizer hanger. For example, if the trailers frames length is 10 feet, then the center-line location f
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• Trailer Suspension Equalizer Slams to One Side or the Other When Weight is on Trailer
  
• First, you will want to make sure that you are not overloading the trailer. The next thing you will want to do is examine (or have the trailer examined) the suspension components to make sure everything is in good working order. A 25-3/4 inch 1,750 pound capacity leaf spring is the longest spring we carry. If this is a tandem axle trailer, and you are using spring # PR3 with 7-3/4 inch long equalizers, make sure the spacing is as follows: From the center of the front hanger to the center o
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• Is There a Difference in Ride Quality Between 4-Leaf and 3-Leaf 3500 lb Leaf Springs
  
• The number of leaves in springs of comparable weight capacity has no bearing on the ride quality. Both the PR3 you mentioned and the PR4B which has 4 leaves share the same eye-to-eye and height dimensions. Leaf springs should be replaced in pairs. For a tandem axle trailer, its best to ensure that all of your springs have the same number of leaves. I have linked you to our Trailer Suspension FAQ page.
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• How to Determine 3 Leaf Trailer Spring Capacity When all Dimensions are the Same for Two Springs
  
• Determining the difference between two sets of springs that have different capacities can be difficult at best, especially if the spring has seen use. If you are talking about new springs that have not been exposed to the elements for a period of time, then our springs come in with the part number either painted on the top of the spring (concave side), or stamped into the band that is wrapped around the leafs. In the case of the # PR3 and # PR722 spring ours come in with paint on the top of t
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• How to Determine the Capacity of Trailer Leaf Springs and How to Raise the Coupler Height
  
• Leaf springs typically have the part # stamped on the strap that holds the leafs together at one end of the shorter leafs, or it is painted on the concave side of the springs. The part number can then be used to determine the capacity of the springs. Generally springs with any age on them will be very hard to get a part number off of. You would then need to go by the axle capacity to determine the spring capacity, which would be 1/2 of the axle capacity. If you have a 3,500 lb capacity axle the
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• Does the Shackle Angle have to be the Same Angle on both Sides of my Trailer Suspension
  
• Most likely you are fine and the difference in angle is due to the trailer sitting higher on one side than the other. I would still verify that the spring hangers are the same distance apart on both sides of the trailer, and that none of the other trailer components are not worn out. For the 3-Leaf Spring # PR3 that you referenced the recommended distance between the hangers is 25-3/4 inches
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