AMS Reverse Rotation Intake Manifold 2004-2021 Subaru STI / 2002-2014 Subaru WRX

Fitment Information: 2002-2014 Subaru WRX  2004-2021 Subaru STI Please note: Will fit 02-05 WRX with EJ20 only with adapter to use WRX style drive by cable throttle body 08-14 WRX with EJ25 requires using STI-style drive by wire throttle body 08-21 STI may require mild clearancing of A/C compressor line Features: Stay Ahead Of Your Competition with the AMS Performance Subaru EJ25 Intake Manifold!The AMS Subaru Intake Manifold was designed to outperform the competition. We referenced many modern design examples and engineering studies to bring you the best intake manifold available for the Subaru EJ20 and EJ25 WRX & STI. After extensive testing we ended up with a manifold that makes more power than anything else currently available on the market! Uncoated Reversed Rotation Configuration 4.5 Liter Plenum Volume 13" Equal Length Intake Runners (Measured from Face of Bellhorn to End of Runner) 2.5" (63.5mm) Intake Runner Diameter (ID of Bellhorn) Bellhorn OD 3.8" (96.7mm) Increas