{"product_id":"gsc-p-d-mitsubishi-4g63t-beehive-valve-springs-ti-retainer-kit","title":"GSC P-D Mitsubishi 4G63T Beehive Valve Springs \u0026 Ti Retainer Kit","description":"\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eGSC Power-Division Beehive Valve Spring Kit with Titanium Retainers — 4G63 (5041)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eA high-pressure beehive spring package for the 4G63, and the reason to spec it over a conventional round-wire spring comes down to the coil geometry.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eBeehive springs allow for a smaller, lighter retainer\u003c\/strong\u003e, which reduces reciprocating valvetrain mass and gives more valve control at high RPM. The tapered coil diameter also greatly reduces coil spring surge — the harmonic that causes float — and improves valve control at extreme RPM levels.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe spring is made with an ovate wire using advanced material heat treatment methods for superior load loss capability. That means the highest level of spring load retention while maintaining good fatigue life across the life of the spring. Nano peened for faster break-in and less spring stress. Every batch is scrutinized for tensile strength, ductility, inclusion content, and fatigue toughness, and each new design is tested to 9,000 rpm.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRated to 10,500 rpm\u003c\/strong\u003e with cams up to 12.1mm net lift — the ceiling is seal-to-retainer contact, not the spring.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eSpring pressures:\u003c\/strong\u003e intake 100 lbs at 1.539\" install height, exhaust 107 lbs at 1.519\". Open pressures are 250 lbs at 1.078\" intake and 256 lbs at 1.058\" exhaust. Uses the OEM spring seat.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e Mitsubishi 4G63 — 1992-2006 Evolution I-IX, 1990-1999 Eclipse GST\/GSX, 1990-1998 Talon TSi, 1990-1994 Laser RS, 1991-1992 Galant VR4. Works on Evo 1-7 and 8\/9 heads.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIncludes 16 beehive valve springs and 16 Grade 5 titanium retainers\u003c\/strong\u003e — a full head's worth.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eDo it while the head is off.\u003c\/strong\u003e If you're already in for cams or a valve job, that's the time.\u003c\/p\u003e","brand":"Street Strip Supply","offers":[{"title":"Default Title","offer_id":47294117937325,"sku":null,"price":399.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/8105\/7197\/files\/gsc5041.jpg?v=1787402349","url":"https:\/\/streetstripsupply.com\/products\/gsc-p-d-mitsubishi-4g63t-beehive-valve-springs-ti-retainer-kit","provider":"Street Strip Supply","version":"1.0","type":"link"}