Don't throw them away, We Can Rebuild Them!
Quick Turnaround

After dismantling each air-jack, inner and outer cylinders are cleaned to remove rust or corrosion.  Burrs and gouges are ground down; then the inner and outer cylinders are polished.  They are then reassembled with new :

Front air-jack off a 2001 GT3 Cupcar:

-Seals
-Bushings
-Springs
Cylinders, feet and other components will be replaced as necessary.
Before we send anything back to you, we test each air-jack to ensure that they are functioning properly. We currently rebuild Sobek and Krontec air-jacks from the 964, 993, 996, 997, 991, and 992 factory race cars.

Unfamiliar with removing your car's air-jacks?

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Disclaimer:  CupCarSolutions is in no way endorsed or affiliated with Dr.Ing. h.c. F.Porsche AG.  "Porsche" and model numbers are all TM of P.A.G.