{"product_id":"milltek-hjs-hi-flow-sports-cat-w-heat-wrap-for-chevrolet-c8-corvette-z06-ssxch111","title":"Milltek HJS Hi-Flow Sports Cat (w\/ Heat Wrap) for Chevrolet C8 Corvette Z06","description":"\u003cp\u003e\u003cstrong\u003eMilltek's HJS Hi-Flow Sports Cat for the Chevrolet Corvette C8 Z06 is a high-flow catalyst upgrade that swaps the restrictive factory cats for HJS high-flow units in T304L stainless, freeing up the flat-plane 5.5 V8 for sharper response and a harder note.\u003c\/strong\u003e It is built for Z06 owners chasing flow and sound gains at the source, and fits directly in place of the OEM catalysts.\u003c\/p\u003e\n\u003ch2\u003eWhat is the HJS Hi-Flow Sports Cat for the C8 Z06?\u003c\/h2\u003e\n\u003cp\u003eIt is a high-flow catalyst section that replaces the OEM cats with HJS-branded high-flow cores, built in hand-finished T304L stainless. This heat-wrapped version (SSXCH111) adds a thermal wrap to help manage under-body heat; the standard version (SSXCH110) is the unwrapped option. HJS cores are chosen for a balance of flow and emissions-focused catalyst quality.\u003c\/p\u003e\n\u003ch2\u003eWho is it for?\u003c\/h2\u003e\n\u003cp\u003eIt suits the C8 Z06 owner who wants to reduce exhaust restriction at the catalyst and sharpen the flat-plane V8 sound, rather than only changing the rear tips. Pair it with a cat-back for the fullest effect.\u003c\/p\u003e\n\u003ch2\u003eWhat does it include and what are the specs?\u003c\/h2\u003e\n\u003cp\u003eThe system ships as a direct-fit high-flow catalyst section with HJS cores, thermal heat wrap and OEM-compatible connections. \u003cspan style=\"color:#FF0000;\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\t\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eMaterial\u003c\/td\u003e\n \u003ctd\u003eT304Lstainless, hand-finished\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003ePipe diameter\u003c\/td\u003e\n \u003ctd\u003e3\" (76.2mm)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCatalyst\u003c\/td\u003e\n \u003ctd\u003eHJS high-flow sports cats\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eOptions\u003c\/td\u003e\n \u003ctd\u003eWith heat wrap (SSXCH111) or without (SSXCH110)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eFitment\u003c\/td\u003e\n \u003ctd\u003eChevrolet Corvette C8 Z06, 2023 and later\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eInstall\u003c\/td\u003e\n \u003ctd\u003eDirect fit in place of OEM catalysts\u003c\/td\u003e\n \u003c\/tr\u003e\n\t\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat are the limitations, and who is it NOT for?\u003c\/h2\u003e\n\u003cp\u003eThis is a high-flow sports-cat section, not a decat, and it works best combined with a matching cat-back. Check emissions rules for your state before fitting high-flow cats. It changes flow and tone at the catalyst; it is not a full power-package on its own.\u003c\/p\u003e\n\u003cp\u003e Every system is built in hand-finished T304L stainless. \u003cem\u003e(Source: Milltek Sport, About Us.)\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLast updated:\u003c\/strong\u003e 2026-07-01.\u003c\/p\u003e\n\u003cp\u003eDesigned in Tennessee and manufactured in the UK with 40+ years of performance exhaust heritage. Tested on the Tail of the Dragon.\u003c\/p\u003e\n\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\n\u003cul class=\"fitment-list\"\u003e\n\u003cli\u003e2020-2026 Chevrolet Corvette E-Ray\u003c\/li\u003e\n\u003cli\u003e2020-2026 Chevrolet Corvette Stingray\u003c\/li\u003e\n\u003cli\u003e2023-2026 Chevrolet Corvette Z06\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek","offers":[{"title":"Default Title","offer_id":60150825812254,"sku":"MILSSXCH111","price":3321.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/7965\/3406\/files\/SSXCH111_1.jpg?v=1791256009","url":"https:\/\/shop.signatureautohaus.com\/products\/milltek-hjs-hi-flow-sports-cat-w-heat-wrap-for-chevrolet-c8-corvette-z06-ssxch111","provider":"Signature Autohaus","version":"1.0","type":"link"}