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GrimmSpeed Catted J-Pipe/Downpipe - 15+ WRX



Fits These Applications:
2015+ Subaru WRX 6 speed Transmission

Engineers began by 3D scanning the OEM J-Pipe and vehicle underbody using our in-house FARO Arm. That data was used in CAD to design a pipe that fits perfectly within the tight underbody packaging on a 2015 WRX without sacrificing ground clearance. The 2015 WRX uses a series of OEM brackets to support the weight of the turbo and J-pipe, the most important of which bolts to the turbine outlet flange. Our engineers insisted on using thick 1/2" stainless steel flanges, but also knew that without a clever design, the very important OEM brackets would no longer line up. The GrimmSpeed flange design uses a CNC machined pocket that the OEM bracket sits in during installation, allowing the use of 1/2" thick flanges as well as the factory turbo support bracket!

-Innovative Turbo Flange Design - 1/2" thick while retaining all OEM brackets
-One-Piece Tube - Ensures exact fitment, robust construction and ease of installation
-Smooth 3.5" to 3" Transition - Matches turbine outlet size and then reduces quickly to maintain exhaust velocity
-100% Made in the USA - Manufactured in Minnesota
-Optimized Tube Routing - Maximize ground clearance and minimize flow restriction without modifying suspension hardware, etc
-Standard 3rd O2 Bung - Allows the future use of aftermarket sensors
-Grounding Strap Mount - Retains all factory functionality
-300 Cell Metallic Substrate Catalytic Converter - Excellent balance of the reduced restriction of a 'race cat' without the stink of a 200 cell unit

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