Kit includes: 3-Way Adjustable Shocks, Upper Mounts,Adjustable Lower Mounts, Threaded Sleeve, Spring Cap, Seat and Hardware For Drag Race Only! Not for Street Use. Universal design allows installation on a variety of chassis 3-Way Adjustable shocks provide controlled squat at the rear for improved weight transfer and traction Lower shock mounts have 6 inches of adjustment in one-half inch increments to suit ride height requirements Lower shock mounts are finished with zinc and yellow chromate plating and the threaded sleeve, spring cap and seat are anodized for corrosion resistance Springs not included Adjustable spring seat with locking set screw allow the spring rate to be finely tuned Use with Competition Engineering New Progressive Wound Coil-Over Springs or Rear Coil-Over Springs for your specific rear-end weight Sold in pairs Made in U.S.A.