MUST READ FITMENT NOTE: ONLY FITS SELECT MODELS LISTED. DOES NOT FIT XDRIVE MODELS. || Description: Cold Side only Intercooler Charge Pipe System Manufactured from 3.00” stepped to 2.50” Lightweight 6061-T6 Aluminum Piping Oversized piping reduces restriction providing increased airflow to the engine Our aluminum piping replaces the brittle, failure-prone factory unit.