{"product_id":"ppe-replacement-high-flow-up-pipes-116121115-2011-2016-6-6l-duramax-lml","title":"PPE REPLACEMENT HIGH FLOW UP-PIPES 116121115 | 2011-2016 6.6L Duramax LML","description":"\u003cp\u003eReplace the cracked or leaking factory up-pipes on your 2011–2016 GM 6.6L Duramax with the PPE 116121115 Replacement High-Flow Up-Pipes. Designed as a direct bolt-in replacement, these premium up-pipes improve exhaust flow while delivering the durability needed for towing, daily driving, and high-performance applications.\u003c\/p\u003e\n\u003cp\u003eConstructed from heavy-duty 11-gauge T304 stainless steel, these 2-inch outside diameter up-pipes are engineered to withstand extreme exhaust temperatures and pressures. The internally sleeved stainless steel bellows provide exceptional strength and reliability while accommodating engine movement and thermal expansion. By reducing exhaust restriction, these high-flow up-pipes help improve turbocharger response, lower exhaust gas temperatures, and reduce backpressure.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward thanks to the direct-fit design, and all necessary gaskets are included for added convenience.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt-in replacement\u003c\/li\u003e\n\u003cli\u003e2-inch outside diameter high-flow design\u003c\/li\u003e\n\u003cli\u003eConstructed from heavy-duty 11-gauge T304 stainless steel\u003c\/li\u003e\n\u003cli\u003eInternally sleeved stainless steel bellows\u003c\/li\u003e\n\u003cli\u003eReduces exhaust backpressure\u003c\/li\u003e\n\u003cli\u003ePromotes quicker turbocharger spool-up\u003c\/li\u003e\n\u003cli\u003eHelps lower exhaust gas temperatures (EGTs)\u003c\/li\u003e\n\u003cli\u003eDesigned for high-temperature, high-pressure applications\u003c\/li\u003e\n\u003cli\u003eIncludes installation gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2011–2016 Chevrolet Silverado 2500HD\/3500HD 6.6L Duramax LML\u003c\/li\u003e\n\u003cli\u003e2011–2016 GMC Sierra 2500HD\/3500HD 6.6L Duramax LML\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pacific Performance Engineering","offers":[{"title":"Default Title","offer_id":52394925031707,"sku":"116121115","price":449.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/5757\/3147\/files\/Screenshot2026-06-24at10.25.33AM.png?v=1782322948","url":"https:\/\/wwmperformance.com\/products\/ppe-replacement-high-flow-up-pipes-116121115-2011-2016-6-6l-duramax-lml","provider":"WWM Performance","version":"1.0","type":"link"}