S13 kit is for the 4 lug spindle

the improved knuckle kinematics together with adjust the Ackermann angle will significantly improved handling at a high angle

Our latest Kompact Smart Port made specifically for the 2015 WRX features the innovative new Smart Port drive-by-wire friendly staging technology that gives you the response of a plumb-back valve

diaphragm-type valve - a type of valve that has a track record of failures

to control the valve irrespective of manifold pressure and shaft seal allows for leak proof operation

Clutch Kit - Xtreme Performance Heavy Duty Organic KFI20002-1A JRX5 S13 kit is for theThe Stage 1 clutch kit uses an upgraded pressure plate with increased clamping pressure, combined with an organic friction disc. Stage 1 delivers substantial increases in performance and power holding capability whilst retaining near factory type driveability, and is designed primarily for high performance road going vehicles. These kits feature a high quality cover with increased clamping force compared with standard, between 20 40% depending on the