OEM TT Front: 168 lbs/in or 3.0 Kg/mm TT Rear: 134 lbs/in or 2.4 Kg/mm NA Front: 168 lbs/in or 3.0 Kg/mm NA Rear: 123 lbs/in or 2.2 Kg/mm Source: Factory Service Manuals ('91 and '93) Eibach Spring Rates (Progressive Rates) TT Front: 182 lbs/in up to 251 lbs/in TT Rear: 142 lbs/in up to 199 lbs/in
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