- Maximize your spring tuning capabilities with this adjustable spring shim
- Extended style for shorter springs and is adjustable from 3 1/8" to 5 1/4"
- Use with 5 or 5 1/2" OD springs and can be used in the front or rear of the vehicle
- 2 7/8" ID center hole allows for use with GM front suspensions and stock mount style small body shocks
- Zinc plated for corrosion resistance