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ARK Test Pipe for Subaru WRX/STI Hatchback '08+

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The ARK test pipe is designed to get the most out of high revving motors. We use 3.0" piping SUS-304 stainless steel. We have dyno proven increases in horsepower and torque from mid-range to redline. Each test pipe includes a bung cap hole for O2 sensors and/or CEL fixers without having to drill into your test pipe. The ARK test pipe is a direct replacement for your OEM secondary catalytic converter. All ARK test pipes will bolt directly to OEM factory exhaust and/or any aftermarket cat-back exhaust with OEM fitment. Recommended for off-road use only. 

ARK Advantages and Features: 
- All Bolt-on System 
- SUS304 Stainless Steel Construction 
- Fully Polished Finish, 3.0 inch Piping 
- CNC Machined Flanges 
- Exposed Micro TIG Welding 


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