Current Specials

    • 125 pts.
Headers and Manifolds

aFe Power Twisted Steel Header



aFe power offers a Twisted Steel Header for the H4-2.5L engine. aFe spent countless hours of R&D to develop the perfect balance of pure race-inspired performance. The smooth curves and increased diameter of this header helps remove restriction and keeps exhaust gas flowing smoothly for improved performance and durability. To eliminate dead space that can cause turbulence and hinder flow, a 4-to-1 formed collector and optimized tube lengths are used. This combination helps increase exhaust velocity improving flow, as well as horsepower and torque improving throttle response. This system retains factory mounting locations and requires no modification for a simple, hassle-free installation. TIG-Welded: 100 percent TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks. Retains Factory Sensors: This system was designed to retain all your factory sensors for a hassle-free installation. 3/8 inches Laser-Cut Flanges: These headers come with 3/8 inches thick laser-cut head flanges and gaskets that are designed to match the head port for a leak-free seal. Formed Collector: The 4-to-1 formed collector is used as an efficient way to collect header primary tubes together. 304 SS Construction: These headers are constructed of durable CNC mandrel bent brushed 304 stainless steel tubing for maximum performance, corrosion resistance, strength and resistance to cracking. Hassle-Free Installation: All hardware and brackets are included for a hassle-free installation.


  1. Installed Review by Brad

    Got them installed with other mods. My torque output was surprising. Had one of the tubners at Cobb of Plano cone over and complemented how good they sounded. He said he had just put some Killer Bs on an STi and said it sounded like **** compared to these. I did lose some of the rumble (as expected) but mostly in the cab, outside the car it still has some rumble and not a ricer sound. Over all very happy going with this header. (Posted on 3/28/2017)

  2. Work of art! Review by Brad

    This thing is amazing! Great price welds look perfect. You would pay almost twice as much for the same level of quality. (Posted on 1/16/2017)

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Additional Information

Manufacturer aFe Power
Color Raw Metal
Warranty Manufacturer
Includes Catalytic Converter N/A
Installation Hardware Included Yes
Manifold Design Equal Length
Piping Flex Joint No
Piping Material Stainless Steel

Disclaimer provides fitment information provided to us by the manufacturer.  However, please make sure the product you are purchasing will fit your year, make, & model Subaru.  For example, one product may fit only a 2002-2004 WRX, but also fits a 2005-2007 STI.  This same product may not fit a 2005-2007 WRX.  Either way, the product will list the fitment years as follows: 2002, 2003, 2004, 2005, 2006, 2007.   So please be sure the product will fit your specific application.  The majority of the products listed on our site will have the year, make, & model fitment information directly in the product title. will not be held liable for purchases made for the incorrect application, and a restocking fee may be required.  If you have any questions, PLEASE contact us before making your purchase.  Our knowledgeable staff will be happy to assist you!  

aFe Power Twisted Steel Exhaust Manifold 2006-2014 WRX / 2004-2019 STI / 2005-2009 LGT

2 Review(s)

SKU: 48-36802


special price $629.00

aFe Power Twisted Steel Header

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