Didn't know that, what spring rate are you running Gong? 7 front 5 back.. i forgot.... i have yet to test it at the track . On the streets, its really firm around the corners, but tooooo bumpy on parra road or liverpool road. Match the coilovers with soft tyres ( Azenis RT215 ) it becomes a instant handling machine. if u have ok tyres ( Michelin PRIMACY ), its constant understeer. Also. Changing the ride height does not effect the spring rate or the dampaning rate. The ZERO series units provide stainless steel lock nut and spring lower seats. The ZERO-1 and ZERO-2 kits share the same size shock absorbers. The ZERO-1 unit can easily and reasonably be transformed to a ZERO-2 set up by simply changing only the shocks. Zero 1 An easy set up unit that is full adjustable and with ride height adjustments, provides a drastic change in your driving. Recommended for drivers who... has experienced the front slipping on bumpy turn-ins. prefer your own setting for a reasonable price. want lower ride height without loss in suspension stroke. want to advance to adjustable rate units for a reasonable price. Zero 2 The 5 stage adjustable ride height version of the ZERO-1 allows adjustment for all stages for performance and ride comfort. A stainless steel body unit. Recommended for drivers who... want tolower the ride height without sacrificing the stroke length. want to enjoy various setting on road or track or weather conditions by adjusting the ride height, spring rate and pre-load setting to his heart's content. want to try various tires from the production supplied to the S tires. want to take the family or girl friend along on weekdays comfortably, but wants to challenge that pass or track on weekends. The 5 stage adjustable shock absorbers for more fun driving Stage 1 or 2 : for everyday city use Stage 3 or 4 : for high grip radial tires Stage 4 or 5 : for competition tires Zero 2R CUSCO's original oil through system. Inverted 5 stage adjustable shock absorber with low friction provides excellent driving and quality comfort. ZERO-2R is the top class equipment with... Lower unladen weight and higher rigidity made possible by the inverted shocks used on many cars competing in the World Rally Championship and All Japan GT Championship. Low friction allows a atable ride at any speed. A ride comfort not realised in previous inverted type shock absorbers. Oil circulation system allows a surprisingly low friction. Shock absorber performance at maximum from walking speeds.