{"product_id":"high-flow-28-5mm-stainless-steel-exhaust-valve-with-5-5mm-stem","title":"High-Flow 28.5mm Stainless Steel Exhaust Valve with 5.5mm Stem","description":"\u003cp\u003eWhy settle for stock when you can upgrade to superior exhaust management? This 28.5mm stainless steel valve, featuring a 5.5mm stem, is crafted to expel gases more efficiently, clearing the cylinder for fresher charges and amplifying power delivery.\u003c\/p\u003e\u003cp\u003eBuilt to endure the rigors of kart track battles, its stainless construction resists fatigue, ensuring longevity even in high-heat scenarios. The design promotes enhanced volumetric efficiency, which means your engine can rev higher and pull stronger through gears.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5.5mm stem diameter for stable operation under valve spring pressure.\u003c\/li\u003e\n\u003cli\u003eRequires aftermarket locks and retainers to secure against extreme forces.\u003c\/li\u003e\n\u003cli\u003eDirect OEM part SI-R-4 equivalent for hassle-free installation in clone heads.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers report tangible gains in mid-range torque, making overtakes easier and corner exits punchier. This valve isn't just a replacement—it's a strategic enhancement for anyone chasing podium finishes. By optimizing exhaust flow, it indirectly boosts fuel economy during practice runs too. SKU: SSV285.\u003c\/p\u003e\u003cp\u003eEquip your GX200 with this for a setup that feels alive, responding instantly to your inputs on the track.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this valve a direct replacement for my stock GX200 engine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this 28.5mm valve is a direct OEM equivalent (SI-R-4) for clone heads, making it a straightforward upgrade for your GX200 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to change my valve springs or retainers when installing this stainless steel valve?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. Because this valve is designed for high-performance applications, you must use aftermarket locks and retainers to ensure the valve is properly secured against the increased forces of high-RPM racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this valve improve my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. By improving volumetric efficiency and exhaust flow, this valve helps your engine rev higher and provides a noticeable boost in mid-range torque, which is ideal for better corner exits and easier overtaking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this valve with my stock valve seats?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While it is designed for clone heads, we always recommend checking your valve seat condition during installation. If your seats are worn, they should be re-cut or replaced to ensure a perfect seal for maximum compression.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ssrl-lock-set-for-stainless-clone-valve-pair-ssrl\"\u003eSteel Valve Retainer Lock Set for Stainless Clone Valves (Pair)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/555062-aftermarket-intake-valve-am555062\"\u003eAftermarket Intake Valve for High-Performance Kart Engines\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/aftermarket-clone-head-bolts-grade-8-4-pack-dp-260-g8\"\u003eHeavy-Duty Grade 8 Aftermarket Clone Head Bolts (4-Pack)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ssv32-stainless-steel-32mm-valve-ssv32\"\u003eOversized 32mm Stainless Steel Valve for Maximum Airflow in Clones\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SwiftKarting","offers":[{"title":"Default Title","offer_id":52378226721087,"sku":"SSV285","price":41.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6843\/4239\/files\/valvetrain-bigvalvesandaccessories-ssv285-stainless-steel-28-5mm-valve-ssv285.jpg?v=1773221236","url":"https:\/\/metro-merch-3.myshopify.com\/products\/high-flow-28-5mm-stainless-steel-exhaust-valve-with-5-5mm-stem","provider":"Metro Merch","version":"1.0","type":"link"}