Landrum ST Series Bump Spring - Gunmetal Gray - 1.96" OD x 2.152" Tall - 300 lb. H77403FS 1-3/8 in Breather Tube to

1-3/8 in Breather Tube to 12 AN Male

1-3/16 in x 18 Spline

1975-2010 Ford F-150

Centerline to centerline = 9

Toyota Corolla 2009-13

Landrum ST Series Bump Spring - Gunmetal Gray - 1.96" OD x 2.152" Tall - 300 lb. H77403FS 1-3/8 in Breather Tube toBump Springs are used in conjunction with a primary spring to allow a race car to have a relatively soft initial spring rate to get down to the desired optimum ride height, and then pick up the rate of the bump spring to achieve a constant dynamic ride height. Consistent Performance and Reliability Landrum Performance Springs give you the consistent high performance and reliability you need. We use state of the art designs, materials, and