GT3/GT2 Rear Spring Adaptor Pair, 60mm

Description: Now available from Tarett Engineering, this precision adaptor allows you to replace your the factory progressive rear springs with your choice of  60mm ID linear rate springs. Until now, there was no way to change the rear GT3 spring rates without having to buy a complete coil over kit. Now you can replace your rear springs with 60mm linear springs and your choice spring rates, while retaining you PASM system. All at a fraction of the price, and with equivalent performance of a premium coil-over kit! This adaptor is made from aircraft quality 6061-T6 aluminum alloy for it’s high strength and light weight, and is anodized or signature red finish for corrosion resistance. *Allows for replacement of the factory progressive rear springs with 60mm ID linear rates.*Retains the factory PASM system.*Allows for a wide choice of linear spring rates.*Same performance at a fraction of the cost of a complete new premium coil over kit.*Compatible with the factory 996 & 997 upper mou