Used to add progressive rate to your linear race spring, Four different durometers (60D - 90D) available, Fits springs with 2.5" to 3.0" inside diameter.
- Four different Spring Rubber durometers (50D - 90D) available for desired rate tuning.
- Spring Rubbers are used to add progressive rate to your linear race spring.
- Adds approximately 1.5" of solid height to your spring.
- Fits springs with 5.0" outside diameters.
- Made in the U.S.A. and sold individually.
