{"product_id":"valve-spring-set-for-4g63","title":"Valve Spring Set for 4G63","description":"The Kiggly Racing SS-RACE is a specialized valve spring set engineered for high RPM and high boost 4G63 engine applications demanding extreme seat pressure. This USA-made kit includes 16 PAC Racing Beehive Springs, FEA-optimized proprietary hardened chrome moly retainers, and treated steel seats.\n\nWith a base seat pressure of 135lb (adjustable up to 150lb via shimming), this set targets builds running over 45lbs of boost. The springs have a rate of 310lb\/in and are designed for a 1.530\" installed height at OEM head specifications. Coil bind occurs at 0.965\", and a minimum height of 1.010\" at maximum lift is noted for shimming.\n\nThis valve spring kit is exclusively recommended for sanctioned drag racing due to the high seat pressure and the resulting stress and wear it imposes on other valvetrain components. It is explicitly not for use in street cars. Vehicle fitment includes Mitsubishi 4G63 models such as the Evolution I-IX (1992-2006), Eclipse GST\/GSX (1990-1999), Talon TSi (1990-1998), Laser RS (1990-1994), and Galant VR4 (1991-1992).","brand":"Kiggly Racing","offers":[{"title":"Default Title","offer_id":52664179032376,"sku":"SS-RACE","price":469.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/686905594.jpg?v=1784334816","url":"https:\/\/store.motormia.co\/products\/valve-spring-set-for-4g63","provider":"MOTORMIA","version":"1.0","type":"link"}