{"product_id":"h-r-zf080-040","title":"H\u0026R 60mm ID Single Race Spring Length 80mm Spring Rate 40 N\/mm or 229 lbs\/inch","description":"\u003cp\u003eH\u0026amp;R 2.50\" I.D. Race Springs are made with extremely high tensile strength wire alloy which allows the use of a thinner wire. Manufactured using advanced materials and precision technology in Germany, H\u0026amp;R 2.50\" I.D. Race Springs are crafted from special lightweight (hf) 54SiCr6 spring steel. For any given spring rate, they are on average 15% lighter and have 10% more travel than competitors' springs. Main springs range from 6\" to 18\" in length and are available in a wide selection of spring rates.  TENDER SPRINGS: H\u0026amp;R 2.50\" I.D. Tender Springs are made of trapezoidal (flat rather than round) spring wire and have a low block height for maximum travel. These springs are designed for demanding motorsport environments, and like all H\u0026amp;R springs, have been pre-blocked at the factory so they will never set or sag. The H\u0026amp;R 60mm I.D. Race Spring line is crafted from special lightweight (hf) 54SiCr6 spring steel and is the most comprehensive 60mm I.D. Race Program in the U.S. If you own a Porsche GT3 or another Euro spec car, our range of 60mm I.D. Race Springs has you covered. With hundreds of main springs and tender springs available, H\u0026amp;R has the lengths and rates necessary for optimal tuning and setup. The H\u0026amp;R complete line of 60mm I.D. main springs range from 80mm to 300mm (25.4mm = 1 inch) in length and 25 N to 700 N (N\/mm x 5.709 = pounds\/inch) spring rates.\u003c\/p\u003e\u003cp\u003eGenuine H\u0026amp;R. Part number ZF080-040.\u003c\/p\u003e\u003cp\u003eShips from US warehouse.\u003c\/p\u003e","brand":"H\u0026R","offers":[{"title":"Default Title","offer_id":48716463571169,"sku":"ZF080-040","price":55.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/7608\/4961\/files\/8bf08ca3-3969-4324-9a61-69f10890858a-800_8fda542d-70bf-4346-a0a7-4dd43839dd97.jpg?v=1784695620","url":"https:\/\/mlperformanceusa.com\/products\/h-r-zf080-040","provider":"ML Performance USA","version":"1.0","type":"link"}