{"product_id":"milltek-secondary-catalyst-bypass-fits-to-oe-system-only-for-porsche-958-cayenne-s-4-8-v8-non-turbo-ssxpo204","title":"Milltek Secondary Catalyst Bypass (Fits to OE System Only) for Porsche 958 Cayenne S 4.8 V8 (Non, Turbo)","description":"\u003cp\u003eThe Milltek Secondary Catalyst Bypass is engineered for Porsche 958 Cayenne S non-turbo models. This bolt-on component bypasses the secondary catalyst, unlocking mid-range performance and refining exhaust tone without modification to the OE system.\u003c\/p\u003e\u003cp\u003eDirect factory fitment using OEM hangers and mounting points, no cutting or modification required. Hand-finished T304L stainless steel construction with CNC-formed internals engineered to eliminate secondary catalyst resonance points while maintaining clean emissions under standard driving.\u003c\/p\u003e\u003cp\u003eBolt-on installation. Fits 958 Cayenne S (M48.02 4.8 V8 non-turbo) exclusively. Dyno-tested for repeatable gains in mid-range response and acoustic character refinement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePre-facelift vs facelift, explained:\u003c\/strong\u003e The 958 Cayenne S used the 4.8 V8 on the pre-facelift 958.1 only, sold through the 2014 model year. From 2015 the facelift 958.2 Cayenne S switched to a 3.6 twin-turbo V6, so this V8 part does not fit facelift cars. If your Cayenne S is a 2014 model, confirm it has the 4.8 V8 before ordering.\u003c\/p\u003e\n\u003cp\u003eDesigned and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2010-2014 Porsche Cayenne S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60151405314334,"sku":"MILSSXPO204","price":492.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/ssxpo204.jpg?v=1791261276","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-secondary-catalyst-bypass-fits-to-oe-system-only-for-porsche-958-cayenne-s-4-8-v8-non-turbo-ssxpo204","provider":"Signature Autohaus","version":"1.0","type":"link"}