The Active Autowerke Test Pipes for BMW E9X M3 models offers and affordable solution to bolt-on horsepower. Made of 100% stainless steel, these test pipes bolt directly onto your factory exhaust headers and provides a tight seal via the included TORCA clamps. Additional support brace provided.
Note: Because Test Pipes replace OEM primary catalytic converters to reduce exhaust restriction, check engine light will turn on. Product intended for racing purposes only.
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