GrimmSpeed 22-25 Subaru WRX / 19-25 Ascent Charge Pipe Kit - Black - GRM113083BLK

The factory charge pipe on the turbocharged 2.4L FA24 platform narrows at several points and has internal features that disrupt airflow. The GrimmSpeed Charge Pipe Kit keeps a consistent diameter with gradual bends for smoother flow, which adds horsepower and sharpens boost response.

The kit keeps Subaru's O-ring quick-release connection at the turbo: a billet 6061 aluminum turbo adapter reuses the factory retention clip. The pipes are mandrel-bent 2.5 in 6061 aluminum, joined by a stepped 5-layer silicone coupler between the lower and upper sections, and the upper pipe uses a cast aluminum intercooler elbow with smoother internal geometry than the OEM part for a cleaner transition into the intercooler end tank. It is a direct replacement for the factory pipe, finished in a durable wrinkle black powder coat.