987 & 981/718 Bilstein PSS9/10/B16 Spring Upgrade KitDescription: After numerous requests for a spring upgrade package for the Porsche 987 and 981 718 with Bilstein PSS9 10 B16's, Tarett Engineering has put this kit together with the most popular springs rates. A perfect combination for hot street or track use, the 450 500 spring rates will reduce body roll and improve suspension response. The rates are within the Bilstein adjustment range without needing to be revalved. Other rates available on

¼” thick mounting brackets for added strength and rigidity

These camber plates replace the compliant factory rubber bushing with a precision Teflon-lined spherical bearing for increased front suspension rigidity

A cockpit adjustable upgrade option will be available soon for instant adjustability on the fly

Quality 17-4 PH Stainless Steel parts

and swaybar arms are CNC machined from aircraft-quality 6061-T6 aluminum for its high strength/weight ratio

Precisely connects the stock or adjustable swaybar to the rear strut assembly for improved feedback and swaybar response

· Perfect fit/no clearance issues

Easy hardware access

and proper match with class 12

The plates are fabricated from alloy steel and nickel plated for strength and corrosion resistance

Both are CNC machined from 6061-T6 aluminum alloy and are anodized red for a corrosion resistant and attractive finish

like what Porsche uses on their race cars