This complete Rear Coil Over Shock Mount Kit is great for the racer needing a custom set up. Designed for use with coil over shocks on an Mustang 8.8 rear axle. Light weight chrome moly mounting tube and larger 1/2" grade 8 shock mount bracket hardware over the standard 3/8" that other kits use. Axle mounting brackets are laser cut for a Mustang 8.8 axle with an 2.88" diameter. If you have an explorer 8.8 or 9" axle that has a 3" axle diameter see part number 2006-27 or 2006-124.