The PRO Rebound Adjustable Shock and the PRO Double Adjustable Shock are available in a new high rebound adjustment range. Both of these adjustables are available in an adjustment range from 6 rebound to a very stiff 11 rebound. This patented valving system is infinitely adjustable. As you turn the adjustment, you can stop at any desired partial adjustment, such as 8-1/2, 9-3/4, 10, 10-1/4 or any desired partial number of valving. This new valving system maintains the ULTIMATE PRO Shock acceleration curves. Of course the standard 3 valve through 8 valve is still available. The Rebound Adjustable is available in a desired compression valve such as a 5. Part numbers with a 5 valve would be AC753-8B and AC756-11B. The double adjustable Shocks would be AC737/38B and AC737/611B.