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

The Equal Length Exhaust Manifold will improve the turbo spool and power in the Subaru STI.

HKS Stainless Steel Equal Length Exhaust Manifold

Equal Length Exhaust Manifold Specs:

• 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

HKS Stainless Steel Equal Length Exhaust Manifold

The factory exhaust manifold in the Subaru STI leaves a lot of room for performance improvements. Although very reliable and robust in design, the factory header puts a limit on those of you with a larger horsepower goal.

HKS, who are some of the founders in the aftermarket turbocharged performance industry, have developed a quality equal-length exhaust manifold that has been designed with smooth bends to provide an unobstructed flow path of exhaust gases straight to the turbocharger. This will improve the turbocharger response which will create more horsepower and more torque.

This is an equal-length design that will produce an aggressive exhaust tone that will come provided with new gaskets and hardware making it ready to install right out of the box. This manifold has also been designed with a stock up-pipe flange to work with the factory or aftermarket up-pipes that utilize the OEM-like flange.

This header will fit any Turbo Subaru model that uses a triangle style oil pain. 02-05 WRX owners will need to convert to the STI oil pan.