The Dual Stage Max Control Arm Bushing features both 50 & 90 Durometers. Softer Acceleration side for more movement and Harder Deceleration side for limited movement. Designed to only give and flex under throttle and come back to static under braking. Does not allow rear end to over rotate under braking.  IMCA Southern Sportmod Legal

1978-1988 GM Rear Bushings

Overall Length: 2.00"

Diameter Small End : 1.86"

Diameter Big End: 1.922"

Inside Diameter: .50"