HKS Stainless Steel Equal Length Exhaust Manifold 2006-2014 WRX / 2004-2021 STI

DESCRIPTION Experience enhanced exhaust performance with the HKS Equal Length Header (Exhaust Manifold) designed for the Subaru EJ25 motor. Compatible with the 08-14 Impreza WRX/STI and the newer 15+ STI models, this manifold replaces the OEM header, offering improved flow dynamics and performance. Employing a 4-1 setup, it enhances both low and high-range performance, while mid-range performance remains at OEM levels. This configuration ensures a balanced enhancement across the RPM range. With consistent factors, the HKS Equal Length Header optimizes exhaust flow, resulting in improved spool and creating a win-win situation for enthusiasts seeking increased power from their OEM turbo setup or utilizing OEM-style 2-bolt flanged pipes. Moreover, this manifold proves to be a valuable addition for those aiming to reduce Exhaust Gas Temperature (EGT). FEATURES Made using SUH409 stainless steel materials Designed to optimize exhaust flow while increasing spool Improves horsepower Improves torque Produces an aggressive exhaust note Accepts the stock up-pipe and aftermarket up-pipes with a stock-like flange Includes new gaskets, hardware, and heat wrap, and worm clamps COMPATIBILITY 2006-2014 WRX 2004-2021 STI