{"product_id":"manley-performance-race-series-exhaust-valves-for-subaru-wrx-and-sti-part-number-11171-8","title":"Manley Performance Race Series Exhaust Valves for Subaru WRX and STI - Part Number 11171-8","description":"Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM\nManley Valve - Exhaust, Valve-R\/M SUBARU WRX 32mm.\n\u003cul\u003e\n  \u003cli\u003eRecommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.\u003c\/li\u003e\n  \u003cli\u003eSwirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.\u003c\/li\u003e\n  \u003cli\u003eStainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.\u003c\/li\u003e\n  \u003cli\u003eVariety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.\u003c\/li\u003e\n  \u003cli\u003eChrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your Subaru WRX or STI engine with the Manley Performance Race Series exhaust valves, designed specifically for high-performance racing applications. Crafted from high-quality stainless steel, these valves deliver exceptional durability and resistance to wear, making them ideal for engines operating under demanding conditions. The valves feature swirl polished under-head areas and fully machined combustion faces, which help optimize airflow and improve combustion efficiency for increased power and performance. Their chrome stems and hard tips further enhance longevity, ensuring reliable operation over extended use. Built to meet the rigorous standards of bracket, drag, and oval track racing, these valves are suitable for engines operating under 8000 RPM, providing a reliable upgrade for both stock and modified setups. The set includes eight valves, with options for Race Master (straight stem) or Race Flo shapes, allowing racers to select the best fit for their specific engine configuration. These valves are recommended for alcohol-powered engines, ensuring optimal performance even under demanding racing conditions. Designed for easy installation, the Manley Subaru WRX and STI exhaust valves support your engine's performance goals while maintaining durability and efficiency. Whether you're building a competitive race engine or upgrading your stock setup for better airflow, these valves are a trusted choice for serious racers and enthusiasts alike.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for engines operating under 8000 RPM, providing reliable performance in racing conditions\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade from high-quality stainless steel for exceptional durability and wear resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSwirl polished under-head areas and fully machined combustion faces for optimized airflow and combustion\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChrome stems and hard tips enhance longevity and resistance to wear\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSuitable for alcohol engines, ensuring consistent performance in demanding environments\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAvailable in Race Master (straight stem) and Race Flo shapes to match specific engine requirements\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePart of Manley's Race Series valves, engineered for bracket, drag, and oval track racing\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2002 Subaru Impreza WRX\u003cbr\u003e\n2003 Subaru Impreza WRX\u003cbr\u003e\n2004 Subaru Impreza WRX\u003cbr\u003e\n2004 Subaru Impreza WRX STI\u003cbr\u003e\n2005 Subaru Impreza WRX\u003cbr\u003e\n2005 Subaru Impreza WRX STI\u003cbr\u003e\n2006 Subaru Impreza WRX STI\u003cbr\u003e\n2007 Subaru Impreza WRX STI\u003cbr\u003e\n2007 Subaru Impreza WRX STI Limited\u003cbr\u003e\n2008 Subaru Impreza WRX STI\u003cbr\u003e\n2009 Subaru Impreza WRX STI\u003cbr\u003e\n2010 Subaru Impreza WRX STI\u003cbr\u003e\n2010 Subaru Impreza WRX STI Special Edition\u003cbr\u003e\n2011 Subaru Impreza WRX STI\u003cbr\u003e\n2011 Subaru Impreza WRX STI Limited\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":53602501361937,"sku":"11171-8","price":237.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/fc089b8f6012af76095e6ae50feb6d67.jpg?v=1779947411","url":"https:\/\/shoprenegade.com\/products\/manley-performance-race-series-exhaust-valves-for-subaru-wrx-and-sti-part-number-11171-8","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}