GSC Power-Division Single Valve Spring Kit for FA20 WRX/BRZ/FRS (gsc5756) 25210 Saves 25lbs from the rear

Saves 25lbs from the rear of the car vs the factory catalytic converters

and all necessary hardware for installation

Comes complete with one 5-inch double-walled

B8 8100 (Bypass) feature "Incremental Flow" bypass adjusters

GSC Power-Division Single Valve Spring Kit for FA20 WRX/BRZ/FRS (gsc5756) 25210 Saves 25lbs from the rearThe GSC Power Division Single Cylindrical Valve Spring Kit with Ti Retainers for the Subaru 2015+WRX, BRZ, Scion FRS and Toyota FT86 using the new 2. 0L NA boxer engine includes 16 titanium retainers, 16 cylindrical valve springs, and 16 spring seats. These round wire springs still have the same high quality attention to detail as our popular beehive kits. The GSC5756 is nano peened and batched according to seat pressure within our specs. The