The BSB4070 adjusts from 20 3/4″ to 22″ with toe adjuster and left hand rod end. 4″ Drop
The BSB4072 adjusts from 18 3/8″ to 19 1/2″ with toe adjuster and left hand rod end. 4″ Drop
BSB Manufacturing builds suspension for circle track racing. They have been producing parts for major chassis builders and distributors for the past 20 years.