Eibach Spring Rubber - Coilover - 90 Durometer - Blue H760C31XS GM HEI 4 Pin

GM HEI 4 Pin

Each lifter features a precision-ground crown radius and surface finish to extend high-rpm durability and promote compatibility with performance camshafts

4-hole spacers enhance low-rpm torque and throttle response and dampen reversion effects on the carb

2A/1 rating (tag located on wrist)

Eibach Spring Rubber - Coilover - 90 Durometer - Blue H760C31XS GM HEI 4 PinEibach Spring Rubbers are used to add progressive rate to your linear race spring. Coil Spring Rubber Insert Four different Spring Rubber durometers (50D 90D) available for desired rate tuning. Fits springs with 2. 5" to 3. 0" inside diameters. Adds approximately 1. 5" of solid height to your spring. Made in the U. S. A. and sold individually. Eibach has been committed to creating the finest race springs in the world for over two decades. Eibach