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1998 Porsche 911
2019 BMW 3 Series xDrive (F3X)
For Nissan 240sx owners who refuse to compromise ride quality for stance
Part Number GS1-FRD005 Part Name Suspension Kit Vehicle 2008-2009 Ford Mustang Bullitt
Swift Springs Coilover Assist Springs - ID: 65mm (2.56") Spring Rate (kgf/mm):4.0 1998 Porsche 911Swift Springs Coilover Assist Springs in 65mm (2. 56") ID provide a dynamic step linear rate that fine tunes rebound travel and prevents inside wheel lift during hard cornering. Unlike helper springs that have minimal rate contribution, Swift assist springs use a heavier rate to actively manage suspension behavior during droop. Every Swift assist spring compresses to the same height regardless of rate, allowing drivers to swap between rates without
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