b'Suspension Tuning Spring Rubbers for 2.5 ID Coil-Over Springs:oHeights of 3/4, 1 & 1-1/4 Depending onSpring Rate & Gap Between CoilsoRon Provides You the Correct HeightsBased on Your Spring Package oDo NOT Use These in Front if Your Car is Running Bump Stops / Tune with Bump Shims oDurometers Available in Most Heights:5, 10, 15, 20, 30, 40, 50, 60, 70, 80 & 90 Sportsman Package - $299 o2 Each of 10, 50 & 80 Durometers oExtra Tall 1-1/4 if Needed +$90 Tuner Package - $495 o2 Each of 5, 15, 40, 60, & 70 Durometers oExtra Tall 1-1/4 if Needed +$180 Cockpit Adjustable Wedge Jacker2.5 Coil Over:oHydraulic Ram Fits Under 2.5 ID Coil Over Springs oSealed System / Bleed Once & Done oHand Turn Knob on Hydraulic Cylinder o7/8" of Hydraulic Ram Height Range Provides Significant Wedge Adjustment o9 of Aircraft Hose Allows Console or Dash MountingoSingle Unit for LR or RR Shock - $370 oDual Units for Both Rear Shocks - $740 Rear Axle Tuning Spacers:oSlotted Holes Fit Any 5-Bolt Pattern 4.5 to 5 o5/8 Rear Axle Studs Required oUsed for Tuning Front-to Rear Balance oNot to Be Used in Front Tuner Package - $62 o2 Each of 1/4" & 1/2 Pro Package - $162 o2 Each of All 4: 1/4", 1/2, 3/4" & 1More Rear Grip on Corner Exit Strategy: One of the keys to the Ron Sutton suspension strategy is utilizing seriously high rear spring rates around 550#-700#. This produces more front grip AND more rear grip. But what if we could get even more grip on corner exit . without giving up any grip or speed on corner entry & mid-corner?This strategy achieves that. Proven on track with many road racers. If we normally run a 2.5 ID x 10 600# rear spring and compress it 1-1/4thats 750# of spring load. With this device, we can run a 3.0 ID x 12 250# spring . compressed 3to create that same 750# load. It fits on our coil-over shock like a spring does. Mid-Corner it Behaves like a 600# spring. But when were loading the rear springs more on corner exit, under throttle, it compresses like a 250# instead of a 600# spring, creating more grip. Consider this when you are looking for that last bit of rear grip.Complete 3.0 Spring Preloader Package with Travel Indicators, Spring Retainer Spacers & Upgrade to 3.00 ID Draco Springs -$775 725'