{"product_id":"kooks-06-13-chevrolet-corvette-z06-zr1-2-x-3-header-green-catted-x-pipe-kit","title":"Kooks 06-13 Chevrolet Corvette Z06 ZR1 2 x 3 Header \u0026 Green Catted X-Pipe Kit","description":"\u003ch4\u003e\u003cstrong\u003eKooks 1-7\/8\" x 3\" Long-Tube Headers \u0026amp; GREEN Catted Connection Pipes for 2006 and 2013 Chevrolet Corvette C6 Z06\/ZR1 LS7 \u0026amp; LS9\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe Kooks 2161H631 header and catted connection kit stands as the benchmark upgrade for 2006 and 2013 C6 Corvette Z06 and ZR1 owners, delivering dyno-verified gains of 55 and 70 rear-wheel horsepower and 45 and 60 lb-ft of torque by replacing the restrictive factory manifolds with true 1-7\/8\" long-tube primaries and high-flow 3\" GREEN catted X-pipe.\u003c\/p\u003e\n\u003cp\u003eHand-tig-welded from T304 stainless steel with merged collectors and laser-cut 3\/8\" flanges, this system maximizes exhaust velocity across the LS7 and supercharged LS9 powerbands while maintaining 49-state emissions compliance.\u003c\/p\u003e\n\u003cp\u003eThe catted connection pipes bolt directly to the factory NPP (dual-mode) or aftermarket cat-back without cutting, preserving the in-cabin valve function and delivering an aggressive, crackle-free V8 note. For drivers demanding track-level performance with street-legal drivability, the 2161H631 provides the complete bolt-on solution trusted by Corvette racers worldwide.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-7\/8\" Long-Tube Primaries:\u003c\/strong\u003e Equal-length design with merged collectors for optimal scavenging and mid-to-top-end power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\" GREEN High-Flow Cats:\u003c\/strong\u003e 49-state EPA compliant metallic substrate cats rated for 1,000+ HP.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eT304 Stainless Steel:\u003c\/strong\u003e Aircraft-grade material, fully TIG welded for lifelong durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Bolt-On:\u003c\/strong\u003e Connects to factory NPP exhaust or any 3\" cat-back; no welding required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreserves NPP Function:\u003c\/strong\u003e Dual-mode exhaust valves remain fully operational.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDyno-Proven:\u003c\/strong\u003e 55 and 70 RWHP \u0026amp; 45 and 60 RWTQ gains on otherwise stock LS7\/LS9 engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e49-state legal (EPA compliant) NOT legal for sale or use in California or CARB-adopting states.\u003c\/li\u003e\n\u003cli\u003eFits both manual and automatic transmissions clears all factory undercarriage components.\u003c\/li\u003e\n\u003cli\u003eO2 sensor extensions included minor heat-shield trimming may be required on early 2006 models.\u003c\/li\u003e\n\u003cli\u003eCalifornia Proposition 65 warning applies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited lifetime on headers 25,000 miles on catalytic converters.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended vehicle lift and exhaust hanger tool advised.\u003c\/li\u003e\n\u003cli\u003eTorque header bolts to 25 ft-lbs in three stages use anti-seize on all threads.\u003c\/li\u003e\n\u003cli\u003eConnect catted X-pipe to factory NPP using supplied clamps and gaskets.\u003c\/li\u003e\n\u003cli\u003ePerform ECU drive cycle after install for proper O2 sensor adaptation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\/Engine\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2006 and 2013\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003eZ06 and LS7 7.0L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2009 and 2013\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003eZR1 and LS9 6.2L Supercharged\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003e427 Convertible and LS7 7.0L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013\u003c\/td\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCorvette\u003c\/td\u003e\n\u003ctd\u003e60th Anniversary 427 and LS7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNote: Fits all C6 Z06 \u0026amp; ZR1 models with factory NPP or aftermarket 3\" cat-back exhaust.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003eWhat's Included in the Purchase\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e(2) 1-7\/8\" Long-Tube Headers with Merged Collectors\u003c\/li\u003e\n\u003cli\u003e(1) 3\" GREEN Catted X-Pipe Connection Section\u003c\/li\u003e\n\u003cli\u003eAll Necessary Gaskets, Stage 8 Locking Header Bolts, Clamps \u0026amp; Hardware\u003c\/li\u003e\n\u003cli\u003eO2 Sensor Extensions\u003c\/li\u003e\n\u003cli\u003eDetailed Installation Instructions\u003c\/li\u003e\n\u003cli\u003ePart Number: Kooks 2161H631\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhy Choose Kooks?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOver 60 years of championship-winning exhaust engineering.\u003c\/li\u003e\n\u003cli\u003e100% handcrafted in the USA using T304 aircraft-grade stainless.\u003c\/li\u003e\n\u003cli\u003eLimited lifetime warranty and unmatched customer support.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Will this trigger a check engine light?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, GREEN cats and included extensions keep all O2 sensors in correct positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Does it work with my Borla\/Akrapovič\/Corsa cat-back?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, 3\" slip-fit connections mate to any standard aftermarket NPP or non-NPP system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How much power will I gain?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 55 and 70 RWHP \u0026amp; 45 and 60 RWTQ on a stock LS7; more with cam\/tune.\u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eDo Kooks headers require a tune after installation?\u003c\/strong\u003e\u003cbr\u003e\n    Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eWill these headers void my factory powertrain warranty?\u003c\/strong\u003e\u003cbr\u003e\n    Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure. Consult your dealer for specifics on your situation.\n  \u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Do these Kooks headers require a tune after installation? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. A professional tune is strongly recommended after installing long tube headers. The significant improvement in exhaust flow changes air fuel ratios and requires ECM recalibration to achieve optimal power output and safe operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will Kooks headers void my factory powertrain warranty? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your vehicle warranty simply because you installed an aftermarket part unless they prove the component directly caused the failure in question. Consult your dealer for specifics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What warranty does Kooks provide? \u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Kooks products are backed by a limited lifetime warranty to the original purchaser against defects in materials and workmanship. Racing and competition use applications may have specific warranty exclusions. Contact Kooks Performance directly for warranty details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e Freight truck (liftgate available).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Ships within 1-2 business days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Heavy-duty crate with foam and corner protection.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kooks Headers","offers":[{"title":"Default Title","offer_id":43267114238031,"sku":"KSH2161H631","price":3773.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/kooks-2161h631-headers_01.jpg?v=1764082426","url":"https:\/\/www.blackopsautoworks.com\/products\/kooks-06-13-chevrolet-corvette-z06-zr1-2-x-3-header-green-catted-x-pipe-kit","provider":"Black Ops Auto Works","version":"1.0","type":"link"}