Engine Mods

DESCRIPTION GrimmSpeed believes that there has not been any major changes to the unequal exhaust manifold in some time, and this is due to the tigh...

The 2025 redesign of our PLM Power Driven Turbo Header now features premium 304 stainless steel and a 2-piece clamp-on design for enhanced adjustab...

The IAG Unequal Length Headers are the perfect way to add more performance to your Subaru WRX STI and still keep the iconic "Boxer Rumble." The hea...

Presenting the newest ETS stock replacement manifold, meticulously crafted for the 2022 and later Subaru WRX models equipped with the FA24 engine. ...

The result of our hard work is one of the best looking, performing and most-durable header options in the Subaru aftermarket. The runners are CNC-b...

DESCRIPTION  Experience enhanced exhaust performance with the HKS Equal Length Header (Exhaust Manifold) designed for the Subaru EJ25 motor. Compat...

DESCRIPTION Introducing the 2022 Subaru WRX FA24 Stock Replacement Manifold from PLM.  Elevate your driving experience with our high-performance ma...

THE IAG PERFORMANCE EQUAL LENGTH HEADER The IAG Performance Equal Length Header is the perfect upgrade to boost the performance and power in ...