{"product_id":"manley-00-03-subaru-wrx-ej20-04-sti-intake-36mm-stainless-race-flo-valves","title":"Manley 00-03 Subaru WRX EJ20 \/ 04 STi Intake 36mm Stainless Race Flo Valves","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Manley Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eManley Performance engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Manley Performance lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eManley Performance 36mm Stainless Steel Race Flo Intake Valves for Subaru WRX\/STi\u003c\/h2\u003e\n\u003cp\u003eUnleash the full potential of your Subaru WRX (EJ20 engine, 2000-2003) and WRX STI (2004) with these high-flow Manley Race Flo Intake Valves. Featuring a 36mm diameter, these valves are engineered to significantly increase airflow into the combustion chamber, leading to substantial gains in horsepower and torque.\u003c\/p\u003e\n\n\u003ch3\u003eAdvanced Design for Maximum Flow\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Stainless Steel Construction:\u003c\/strong\u003e Built from high-grade stainless steel for exceptional durability and resistance to extreme engine temperatures and pressures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChrome Stems \u0026amp; Hard Tips:\u003c\/strong\u003e Equipped with chrome-plated stems and hardened tips to ensure superior wear resistance and long-term reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwirl Polished \u0026amp; Fully Machined:\u003c\/strong\u003e The under-head areas are swirl polished to optimize airflow velocity, while the fully machined combustion faces ensure a perfect seal and efficient operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRace Flo Series:\u003c\/strong\u003e The Race Flo design promotes maximum airflow, making these valves ideal for high-performance and racing applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerformance Enhancements\u003c\/h3\u003e\n\u003cp\u003eThese 36mm intake valves are a critical component for enthusiasts seeking to push the performance envelope of their Subaru. By allowing a greater volume of air-fuel mixture into the cylinders, they enable more efficient combustion and higher power output. The robust construction ensures they can handle the demands of aggressive driving and high-performance tuning.\u003c\/p\u003e\n\n\u003cp\u003eRecommended for alcohol engines, these valves offer proven reliability under the most demanding conditions. Whether you're building a track-focused machine or a street-legal powerhouse, these Manley valves are an essential upgrade.\u003c\/p\u003e\n\n\u003cp\u003eMaximize your Subaru's performance with top-tier components. Find your Manley 36mm Stainless Steel Race Flo Intake Valves at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003ch3 style=\"margin:0 0 8px;\"\u003eVehicle Fitment\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;font-size:0.92em;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f0f0f0;text-align:left;\"\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eYears\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:6px 10px;\"\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2005-2006\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSaab\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e9-2X\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eAero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2002-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2004-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX STI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2006-2007\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2006-2007\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2007\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX STI Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2009-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX Premium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2010\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX STI Special Edition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003e2010-2012\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eSubaru\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eImpreza\u003c\/td\u003e\n\u003ctd style=\"padding:4px 10px;border-bottom:1px solid #eee;\"\u003eWRX Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Manley Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/manley-90-99-mazda-miata-1-8l-bp056-dohc-16-exhaust-28mm-stainless-race-master-valves\" style=\"color:#0066cc;text-decoration:none;\"\u003eManley 1.8L BP056 DOHC 16 Exhaust 28mm Stainless Race Master Valves — Fits 1994-1997, 1999\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/manley-90-99-mazda-miata-1-8l-bp056-dohc-16-intake-33mm-stainless-race-master-valves\" style=\"color:#0066cc;text-decoration:none;\"\u003eManley 1.8L BP056 DOHC 16 Intake 33mm Stainless Race Master Valves — Fits 1994-1997, 1999-\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/manley-90-99-mazda-miata-1-8l-bp056-dohc-16-exhaust-29mm-stainless-race-master-valves\" style=\"color:#0066cc;text-decoration:none;\"\u003eManley 1.8L BP056 DOHC 16 Exhaust 29mm Stainless Race Master Valves — Fits 1994-1997, 1999\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/manley-00-03-subaru-wrx-ej20-04-sti-exhaust-32mm-stainless-race-master-valves\" style=\"color:#0066cc;text-decoration:none;\"\u003eManley 00-03 Subaru WRX EJ20 \/ 04 STi Exhaust 32mm Stainless Race Master Valves\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/manley-subaru-wrx-ej205-sti-ej257-33mm-race-master-exhaust-valves-set-of-8\" style=\"color:#0066cc;text-decoration:none;\"\u003eManley Performance Subaru WRX EJ205\/STi EJ257 33mm Race Master Exhaust Valves (Set of 8) —\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Manley 00-03 Subaru WRX EJ20 \/ 04 STi Intake 36mm Stainless Race Flo Valves\",\"description\":\"Boost your Subaru WRX\/STi EJ20 with Manley 36mm Stainless Steel Race Flo Intake Valves. Maximize airflow for peak performance. Shop GGCRACING!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Manley Performance\"},\"mpn\":\"11138-8\",\"url\":\"https:\/\/ggcracing.com\/products\/manley-00-03-subaru-wrx-ej20-04-sti-intake-36mm-stainless-race-flo-valves\",\"offers\":{\"@type\":\"Offer\",\"price\":\"201.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/manley-00-03-subaru-wrx-ej20-04-sti-intake-36mm-stainless-race-flo-valves\",\"sku\":\"MAN11138-8\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Intake\",\"item\":\"https:\/\/ggcracing.com\/collections\/intake\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Manley Performance\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Manley+Performance\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Manley 00-03 Subaru WRX EJ20 \/ 04 STi Intake 36mm Stainless Race Flo Valves\",\"item\":\"https:\/\/ggcracing.com\/products\/manley-00-03-subaru-wrx-ej20-04-sti-intake-36mm-stainless-race-flo-valves\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Manley 00-03 Subaru WRX EJ20 \/ 04 STi Intake 36mm Stainless Race Flo Valves fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Use the fitment table above to confirm.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Manley Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Manley 00-03 Subaru WRX EJ20 \/ 04 STi Intake 36mm Stainless Race Flo Valves?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Cold air intakes typically install in 30-60 minutes with basic hand tools. No tuning required for most plug-and-play kits.\"}}]}\u003c\/script\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":41458461245524,"sku":"MAN11138-8","price":201.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/32fcd9ac6aa3616d28d9da247d14fd15_b2d5587f-80b8-4b88-95ba-82fa11e688f2.jpg?v=1721719941","url":"https:\/\/ggcracing.com\/en-co\/products\/manley-00-03-subaru-wrx-ej20-04-sti-intake-36mm-stainless-race-flo-valves","provider":"GGCRACING INC","version":"1.0","type":"link"}