{"product_id":"plm-power-driven-h-series-ramhorn-4-1-header-h22-amp-f20b","title":"PLM Power Driven H-Series Ramhorn 4-1 Header – H22 \u0026amp; F20B","description":"\u003ch2 data-start=\"102\" data-end=\"166\"\u003e\u003cstrong data-start=\"105\" data-end=\"166\"\u003ePLM Power Driven H-Series Ramhorn 4-1 Header – H22 \u0026amp; F20B\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-start=\"168\" data-end=\"200\"\u003e\u003cstrong data-start=\"168\" data-end=\"176\"\u003eSKU:\u003c\/strong\u003e PLM-H2B-RH-HEADER-KIT\u003c\/p\u003e\n\u003ch3 data-start=\"202\" data-end=\"231\"\u003e\u003cstrong data-start=\"206\" data-end=\"229\"\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"232\" data-end=\"631\"\u003eUnlock the full potential of your H-Series engine with the \u003cstrong data-start=\"291\" data-end=\"326\"\u003ePLM H-Series Ramhorn 4-1 Header\u003c\/strong\u003e, designed for enthusiasts who demand maximum performance and precision engineering. Crafted from \u003cstrong data-start=\"424\" data-end=\"447\"\u003e304 stainless steel\u003c\/strong\u003e with \u003cstrong data-start=\"453\" data-end=\"473\"\u003ehand TIG welding\u003c\/strong\u003e, this long-tube header delivers exceptional exhaust flow, increased horsepower, and an aggressive engine note while maintaining reliability and durability.\u003c\/p\u003e\n\u003cp data-start=\"633\" data-end=\"1068\"\u003eFeaturing a \u003cstrong data-start=\"645\" data-end=\"668\"\u003e4-1 merge collector\u003c\/strong\u003e and a \u003cstrong data-start=\"675\" data-end=\"706\"\u003etrue 2.5\" exhaust collector\u003c\/strong\u003e, this header is built to optimize mid- to high-range power while reducing backpressure. Its \u003cstrong data-start=\"799\" data-end=\"835\"\u003eCNC-machined 0.38\" thick flanges\u003c\/strong\u003e and \u003cstrong data-start=\"840\" data-end=\"872\"\u003e18-gauge mandrel-bent tubing\u003c\/strong\u003e ensure a perfect fit and smooth airflow. The \u003cstrong data-start=\"918\" data-end=\"947\"\u003etwo-piece slip-fit design\u003c\/strong\u003e simplifies installation and allows fine-tuning for the ideal height and alignment in H-Series swaps or Prelude builds.\u003c\/p\u003e\n\u003cp data-start=\"1070\" data-end=\"1297\"\u003ePerfect for H22, F20B engines, or H-Series swap projects, this header delivers \u003cstrong data-start=\"1149\" data-end=\"1215\"\u003eperformance gains, precision fitment, and long-lasting quality\u003c\/strong\u003e, making it a top choice for autocross, road racing, or spirited street driving.\u003c\/p\u003e\n\u003ch3 data-start=\"1299\" data-end=\"1319\"\u003e\u003cstrong data-start=\"1303\" data-end=\"1319\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1320\" data-end=\"1722\"\u003e\n\u003cli data-start=\"1320\" data-end=\"1364\"\u003e\n\u003cp data-start=\"1322\" data-end=\"1364\"\u003ePremium 304 stainless steel construction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1365\" data-end=\"1423\"\u003e\n\u003cp data-start=\"1367\" data-end=\"1423\"\u003eLong-tube 4-1 Ramhorn design for improved exhaust flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1424\" data-end=\"1455\"\u003e\n\u003cp data-start=\"1426\" data-end=\"1455\"\u003eTrue 2.5\" exhaust collector\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1456\" data-end=\"1502\"\u003e\n\u003cp data-start=\"1458\" data-end=\"1502\"\u003eCNC-machined manifold flanges, 0.38\" thick\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1503\" data-end=\"1555\"\u003e\n\u003cp data-start=\"1505\" data-end=\"1555\"\u003e18-gauge mandrel-bent tubing for optimal airflow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1556\" data-end=\"1604\"\u003e\n\u003cp data-start=\"1558\" data-end=\"1604\"\u003eHand TIG welded for durability and precision\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1605\" data-end=\"1658\"\u003e\n\u003cp data-start=\"1607\" data-end=\"1658\"\u003eTwo-piece slip-fit design for easier installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1659\" data-end=\"1692\"\u003e\n\u003cp data-start=\"1661\" data-end=\"1692\"\u003eIncludes gaskets and hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1693\" data-end=\"1722\"\u003e\n\u003cp data-start=\"1695\" data-end=\"1722\"\u003eOne-year limited warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1724\" data-end=\"1747\"\u003e\u003cstrong data-start=\"1728\" data-end=\"1747\"\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1748\" data-end=\"1894\"\u003e\n\u003cli data-start=\"1748\" data-end=\"1774\"\u003e\n\u003cp data-start=\"1750\" data-end=\"1774\"\u003eHonda H22 VTEC engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1775\" data-end=\"1797\"\u003e\n\u003cp data-start=\"1777\" data-end=\"1797\"\u003eHonda F20B engines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1798\" data-end=\"1824\"\u003e\n\u003cp data-start=\"1800\" data-end=\"1824\"\u003eH-Series swap vehicles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1825\" data-end=\"1894\"\u003e\n\u003cp data-start=\"1827\" data-end=\"1894\"\u003eHonda Prelude (requires aftermarket or notched front crossmember)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1896\" data-end=\"1922\"\u003e\u003cstrong data-start=\"1900\" data-end=\"1922\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"1923\" data-end=\"2127\"\u003e\n\u003cli data-start=\"1923\" data-end=\"1991\"\u003e\n\u003cp data-start=\"1925\" data-end=\"1991\"\u003eAdjustable header height with included double-nut locking system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1992\" data-end=\"2051\"\u003e\n\u003cp data-start=\"1994\" data-end=\"2051\"\u003eRecommended for H-Series motors and Prelude swap builds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2052\" data-end=\"2127\"\u003e\n\u003cp data-start=\"2054\" data-end=\"2127\"\u003ePreludes may require aftermarket front crossmember or crossmember notch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Racing Precision Motorsports","offers":[{"title":"Default Title","offer_id":43963343962172,"sku":"PLM-H2B-RH-HEADER-KIT","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5934\/4956\/files\/PLM-H2B-RH-HEADER-3T.webp?v=1770430236","url":"https:\/\/rpm-racing.com\/products\/plm-power-driven-h-series-ramhorn-4-1-header-h22-amp-f20b","provider":"Racing Precision Motorsports","version":"1.0","type":"link"}