Grimmspeed StealthBox Cold Air Intake BLACK - Subaru 15-21 WRX - 060060 919 Series We wanted to develop a

We wanted to develop a knob that was not only weighted and great looking but also fit into the palm of your hand comfortably

It's easy to see that the engine reaches redline faster and drops to idle faster with the GrimmSpeed Lightweight Crank Pulley installed

No laptop required for monitoring

H014 pressure plate features an exclusive diaphragm design to increase clamp load

ACT’s 6-pad rigid race discs are made with high quality

Grimmspeed StealthBox Cold Air Intake BLACK - Subaru 15-21 WRX - 060060 919 Series We wanted to develop aInspiration for the StealthBox Intake came from internal discussions about what we wanted from an intake system for the 2015+ WRX. Of course performance is the highest priority, but at GrimmSpeed so much more than that goes into a product. We wanted an intake that purred quietly under normal driving circumstances, but would roar at wide open throttle. We wanted an intake that looked at home in the well sported 2015+ WRX engine bay instead of a shoebox