Eibach XT Barrel Coil-Over Spring - 2.50" ID x 10" Tall - 500 lb. 13-RS1-B-XL Our Harmonic Balancer kit includes

Our Harmonic Balancer kit includes 7/16"

75 in Long x 5 in Wide

1969-1985 Pontiac Firebird

36 x 72 in

Eibach XT Barrel Coil-Over Spring - 2.50" ID x 10" Tall - 500 lb. 13-RS1-B-XL Our Harmonic Balancer kit includesBuilding on six decades of spring technology, Eibach introduces our most advanced ERS System. Designed specifically for the Dirt Modified Racer, the PLATINUM SERIES springs are engineered using our proprietary ultra high tensile alloy to deliver increased travel, maximum rate linearity, lightest physical weights and legendary durability. Hi Tensil Platinum Spring Coil Used Ultra Lightweight for Reduced Unsprung Mass Each Spring Individually Tested