{"product_id":"h-r-54090","title":"H\u0026R 17-19 Porsche 911 \/ 991 GT3 RS ID Race Spring","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 54090.\u003c\/p\u003e\u003cp\u003eShips from US warehouse.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e California Proposition 65 — this product can expose you to chemicals known to the State of California to cause cancer or reproductive harm.\u003c\/p\u003e","brand":"H\u0026R","offers":[{"title":"Default Title","offer_id":48716535955681,"sku":"54090","price":653.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/7608\/4961\/files\/3e3bb8c0-465c-460a-99a1-a6058591a878-800.jpg?v=1784695665","url":"https:\/\/mlperformanceusa.com\/products\/h-r-54090","provider":"ML Performance USA","version":"1.0","type":"link"}