Designed in-house by Direnza engineers, our sports cat downpipes are a direct replacement for the stock catalytic converters. Engineered to not only improve power and torque but also throttle response on the S55 engine.

• 3″ Diameter downpipes for maximum gas flow giving optimum performance increases
• Replaces the restrictive catalytic converter allowing you to gain more power from the S55 V6 engine
• TIG welded from T304 stainless steel for maximum strength and rust prevention
• Designed to be a direct replacement for the OEM catalytic converter
• Built in Flexi’s reducing any strain on the exhaust system