Milltek Secondary Catalyst Delete Pipe (Fits to Milltek Cat-Back Only) - Porsche Cayenne 958 Turbo 4.8 V8 (Pre-Facelift) - SSXPO107

The Milltek Cat Back Secondary Catalyst Delete Pipe removes the secondary catalyst from dual-pipe exhaust assemblies, improving gas flow and reducing backpressure restrictions. Direct fitment with Milltek Cat-Back exhaust systems, no modifications required.

CNC-formed T304L stainless steel construction with hand-finished welds. Engineered to work seamlessly with OEM mounting points and Milltek Cat-Back systems, preserving OEM+ fitment integrity while maximizing scavenging efficiency across the rev range.

Fitment:

• For use with Milltek Cat-Back exhaust systems only
• Removes secondary catalyst restriction in dual-pipe configurations
• Maintains OEM hanger compatibility

Pre-facelift vs facelift, explained: This part is built for the pre-facelift Cayenne 958, known as the 958.1, sold from launch through the 2014 model year. Porsche facelifted the Cayenne in mid-2014, creating the 958.2 for the 2015 to 2018 model years, with revised headlights, a new front bumper and a restyled tailgate. Because the 2014 model year straddles the changeover, confirm your car is a pre-facelift 958.1 before ordering. Milltek does not offer a facelift 958.2 version of this part.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Specifications

• Pipe diameter: 70mm (2.76")
• Off-road / competition use only. Not legal for use on public roads in the US.

Fitment

• Porsche > Cayenne > 958 Turbo 4.8 V8 (Pre-Facelift) > 2010 to 2014

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.