{"product_id":"supertech-single-valve-spring-kit-nissan-sr20det","title":"Supertech Single Valve Spring Kit - Nissan SR20DET","description":"\u003cp\u003eSupertech single valve spring kit. Upgraded spring rate over factory for boosted SR20 builds running higher RPM.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e Nissan SR20DET — S13, S14, S15 Silvia, 180SX\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart #:\u003c\/strong\u003e SPRK-H1021S-SR20\u003c\/p\u003e\u003cp\u003eConfirm installed height and required seat pressure with your machinist or cam supplier before ordering. New, in original manufacturer packaging. Ships direct from our distribution partner.\u003c\/p\u003e","brand":"Supertech","offers":[{"title":"Default Title","offer_id":48501349613813,"sku":"SPRK-H1021S-SR20","price":558.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1255\/3183\/files\/a7aac4e315d1269ad624eb2d6c15c7f6_41dbdc09-3044-4e90-8591-67c03ca10939.png?v=1785765310","url":"https:\/\/www.jdm-online.com\/products\/supertech-single-valve-spring-kit-nissan-sr20det","provider":"JDM Alliance LLC","version":"1.0","type":"link"}