AMS Performance Subaru WRX/STi Weighted Carbon Fiber Shift Knob GS200T The polyurethane bushing mounts have

The polyurethane bushing mounts have been impregnated with graphite

Add some horsepower and maybe an aggressive cam and you are really asking for problems

the PCV "check" valve closes and

the car handling has notably improved

Rear -30mm to -35mm

AMS Performance Subaru WRX/STi Weighted Carbon Fiber Shift Knob GS200T The polyurethane bushing mounts haveThe AMS Performance WRX STI Weighted Carbon Fiber Shift Knob was designed to extend the length of the shifter which aids in shifting throw and keeps the knob closer to the drivers hands while road racing. Made from high quality carbon fiber with a threaded steel core, it is the perfect upgrade for any car enthusiast looking for improved performance and style. The AMS Performance Weighted Carbon Fiber Shift Knob is designed with a 40mm increased height