Tarett Engineering has put this kit together to upgrade the springs on your 991 GT3.  Choose between our Sport kit with 560 front and 672 rear spring rates, our Track kit with 672 front and 840 rear spring rates. Both kits will reduce body roll and improve suspension response. The rates are within the range of the OEM  GT3 dampers without needing to be revalved. Other rates available on request. We chose Swift springs for this kit because they are the lightest, strongest, highest quality springs on the market today. Together with the needed helper springs and spacers, this is a complete drop in spring upgrade kit.

 

• Reduced body roll
• Improved suspension response
• Highest quality Swift racing springs
• Complete bolt in kit

 

Each kit comes complete with:

 2 Front 560 or 672 lb/in Swift main springs

 2 Rear 672 or 840 lb/in Swift main springs

 4 Swift helper springs with spacers and thrust plates

 Custom rear spring adapters and spacers