There are 3 basic types of springs for boat trailers. These are: Double Eye, Single Eye, and Hook or Open Eye.
The following is some guidance on how to measure each type of spring.
Double Eye spring measurement: Measured from Center of Hole (Eye) to Center of hole.
There are 1 leaf 2, 3, 4, 5, 6, leaf springs. When measuring to replace springs, it is best to measure where they mount hole-to-hole as the old spring tend to have flattened out and are longer that they were when new.
The most common springs are 20″ double eye, 25-1/4″ double eye, 24″ single eye, 26″ single eye.
- Leaf spring acts as part of your trailer’s suspension system
- Provides attachment point for your trailer’s axle
- Multiple leaves allow flexibility to absorb road shock
- Allows for a smooth ride
- Reduces wear and tear on the trailer
- Ensures level ride on bumpy and uneven surfaces
- Sturdy steel construction
- Nylon bushing included on all springs