BLOX Racing's exhaust system for the 2015+ Subaru WRX is manufactured using complete T304 stainless steel. The 3" cat-back system features mandrel-bent tubing that has been TIG-welded to ensure durability and reliability against cracks and exhaust leaks. The BLOX Racing system exits out of dual, high flow mufflers each with dual tips. BLOX Racing's cat-back system provides power and torque, while maintaining a suitable exhaust note. Vehicle Applications 2015-2018 Subaru WRX 2015-2018 Subaru STi Exhaust Highlights T304 stainless steel construction Mandrel-bent, TIG-welded Dual mufflers 

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