FREE SHIPPING ON ALL ORDERS

GrimmSpeed Equal Length Header – 2015-2021 WRX

GrimmSpeed Equal Length Header – 2015-2021 WRX

$899.00

This is GrimmSpeed’s Equal Length Header and has been designed to provide the turbocharger with an uninterrupted flow of exhaust gases to greatly improve the spool response while increasing the horsepower, the torque, all while saving weight. The equal-length layout will produce an aggressive, race-inspired exhaust tone throughout the entire RPM range, and makes for an excellent bolt-on modification. This header will work with the factory turbocharger or factory-like aftermarket turbochargers.


 

In stock

FREE SHIPPING ON ORDERS OVER $100

SKU: 113008 Categories: , , , Tag:

Description

The Highest Quality, Built to Last!

Over the years, GrimmSpeed has proven that our exhaust products are some of the highest-quality and best-performing in the industry because of the detail oriented approached that we put into their development. When it comes to improving on an OEM design, this attention to detail and overall exhaust knowledge allows us to identify aspects of the factory parts that can be greatly improved upon.

One of the first things to note about the OE exhaust manifold are the several points where flow is decreased due to a neckdown in piping diameter. These disruptions in exhaust flow result in decreased turbine efficiency which ultimately limits boost and power production. Furthermore, the OE merge collectors are made specifically with ease of manufacturing in mind and the result is a compromise on performance. The collectors contain very odd shapes that are bad for smooth exhaust flow and have several diameter restrictions that make them one of the biggest weaknesses of the stock manifold. Finally, the angle of the exhaust flow merge is also not ideal, causing the exhaust pulses to “fight” each other, which can add to flow differences for the twin scroll turbine, sacrificing spool and performance.

After isolating the inadequacies of the OEM exhaust manifold, we were able to start identifying key areas of improvement: correctly sized and consistent exhaust runners that are more equal length, a consistent and non-bottlenecking merge collector inlet and outlet and a higher angle merge collector to direct flow into the turbine and prevent opposing flow disruptions. Beyond that, we decided on using thicker tubing and flanges for increased durability and longevity to more-effectively support the overhanging turbocharger.


Quick Notes:

  • Full 304 Stainless Steel Construction – Flanges, tubing, collector and badge

  • True Equal Length Runners – CNC bent and trimmed, less than 1% variance from the longest to the shortest

  • Innovative Cast Merge Collector – Low restriction inlet and outlet, smooth flow and consistent performance

  • Smooth, Restriction-Free Flow Throughout – Single piece mandrel bent tubing welded to a single piece merge collector removes unwanted “steps”

  • Thick 1/2in CNC Cut Flanges and 14ga Tubing – Added durability and longevity

  • No Tune Required – Safe to run, just bolt on

  • No Ground Clearance Loss – Clears factory skid plate without using spacers

  • J-Pipe/Turbo Bracket Included – Retain the support that other aftermarket header lose

  • Gaskets and Hardware Included – Everything you need to get installed and on the road

  • Manufactured and Welded In The USA – For consistency and top quality control


 

Additional Information

Weight16.2 lbs
Dimensions26.2 × 12 × 11.9 in

Compatibility

  • 2015-2021 WRX

 

Installation Guide

Install Guide