{"product_id":"manley-221431-16-valve-spring-1-311-single-hemi","title":"MANLEY 221431-16 Valve Spring 1.311 Single HEMI","description":"\u003ch2\u003eDescription MANLEY 221431-16 Valve Spring 1.311 Single HEMI\u003c\/h2\u003e\u003cp\u003eManley Performance valve springs are engineered for maximum durability, stability, and precision in high-performance and racing applications.\u003c\/p\u003e \u003cp\u003eCrafted from premium chrome-silicon alloys, these springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs.\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDual and triple valve spring designs\u003c\/li\u003e \u003cli\u003eDesigned to handle aggressive cam profiles\u003c\/li\u003e \u003cli\u003eHelps prevent valve float\u003c\/li\u003e \u003cli\u003eSuitable for naturally aspirated and forced induction applications\u003c\/li\u003e \u003c\/ul\u003e\u003ch3\u003eSpecifications:\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eProduct Market: Domestic\u003c\/li\u003e \u003cli\u003eAverage Gram Weight: 72 GR\u003c\/li\u003e \u003cli\u003eEmissions Code: 3\u003c\/li\u003e \u003cli\u003eProduct Type: Engine Valve Spring\u003c\/li\u003e \u003cli\u003eValve Spring Quantity: 16\u003c\/li\u003e \u003cli\u003eValve Spring Series: NexTek Series\u003c\/li\u003e \u003cli\u003eValve Spring Type: Single Conical Ovate Wire\u003c\/li\u003e \u003cli\u003eValve Spring Rate: 353 PPI\u003c\/li\u003e \u003cli\u003eValve Lift – Maximum: 0.650 IN\u003c\/li\u003e \u003cli\u003eInstalled Pressure and Height: 145 @ 1.811 PPI\u003c\/li\u003e \u003cli\u003eOpen Pressure and Height: 370 @ 1.161 PPI\u003c\/li\u003e \u003c\/ul\u003e","brand":"MANLEY","offers":[{"title":"Default Title","offer_id":43225966641332,"sku":"221431-16","price":572.39,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/2605\/3812\/files\/145362-manley-221431-16-1.jpg?v=1787251366","url":"https:\/\/atomic-shop.eu\/products\/manley-221431-16-valve-spring-1-311-single-hemi","provider":"ATOMIC-SHOP Performance Parts \u0026 Motorsport Equipment - EU","version":"1.0","type":"link"}