I've returned my S197 to stock and have a very nice suspension setup for sale. This setup will work on all S197's:
AST 4100 1-way dampers w/Swift springs. Included are (not pictured, but are in new condition as I ran these dampers with Vorshlag C/C plates): adapters for factory-style springs (this makes these dampers F Street legal for SCCA Autocross, as you can use for factory spring and strut mounts), helper spring adapters, bump stops, adjustment knobs, and AST tool kit. The spring rates are 560 lb/in front and 224 lb/in rear. I used this setup for two season of autocross and it performed phenomenally. There’s about 5k miles on them, and they’re in excellent condition. Asking SOLD shipped and PayPal'd.
AST 4100 1-way dampers w/Swift springs. Included are (not pictured, but are in new condition as I ran these dampers with Vorshlag C/C plates): adapters for factory-style springs (this makes these dampers F Street legal for SCCA Autocross, as you can use for factory spring and strut mounts), helper spring adapters, bump stops, adjustment knobs, and AST tool kit. The spring rates are 560 lb/in front and 224 lb/in rear. I used this setup for two season of autocross and it performed phenomenally. There’s about 5k miles on them, and they’re in excellent condition. Asking SOLD shipped and PayPal'd.
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