{"product_id":"custom-header-304-stainless-steel","title":"Custom Header, 304 Stainless Steel","description":"The XL Honda Civic Si 06-11 Custom ASP Header is an individually fabricated exhaust component designed for the FG2 \u0026amp; Fa5 chassis Civic Si. Constructed from US grade 304 stainless steel, this header is built to resist rust and ensure longevity. It features a sophisticated design with 3 stepped, equal-length runners and a true 4-into-1 merge collector, engineered to maximize airflow efficiency and unlock the full horsepower and torque potential of K20 and K24 engines.\n\nThe header's megaphone\/reverse cone design is specifically beneficial for delivering maximum peak horsepower and broadening the power band. It includes a machined K series head flange, a compact true 4-1 merge collector, and one O2 bung, along with necessary collector springs and tabs. Multiple exhaust hook-up options are available to suit different exhaust system configurations, including megaphone\/reverse cone with V-band for 3\" exhausts or a straight connection for stock flanges with 2.5\" exhausts. Full race exhaust systems may also utilize specific test pipes and transitions.\n\nThis product is intended for off-road use only and will delete the stock catalytic converter. An O2 sensor extension is required for installation. Wait times apply for fabrication and shipping.","brand":"Advanced Street Performance","offers":[{"title":"Default Title","offer_id":52686799438136,"sku":"ASP-HDR-XL-CVCSI-06-11","price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/661655770.png?v=1784876864","url":"https:\/\/store.motormia.co\/products\/custom-header-304-stainless-steel","provider":"MOTORMIA","version":"1.0","type":"link"}