{"product_id":"umi-performance-4049","title":"UMI Performance 67-72 GM A-Body Spring Kit Factory Height","description":"\u003cp\u003eA spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. UMI’s springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. Our front springs are wound from 5160 CrSi premium wire and feature a linear 530 lb\/in rate. The rear springs are wound from 9254 CrSi premium wire and feature a linear 130 lb\/in rate. The linear rate provides consistent handling characteristics which are important for Auto-x and Pro-Tour applications while the increase in stiffness reduces body roll and prevents the “floating” feeling so common with the A-body. These springs are suitable for Auto-x and Pro-Tour applications as well as corner carving and general cruising. The ride height is engineered to be level with standard SBC, Pontiac 400 and aluminum head\/intake Big Block Chevy as well as LS power (lightened cars may require spring trimming). The front springs are also suitable for full weight Big Block applications when ¼” nose down rake is desired. They have a tough, black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.\u003c\/p\u003e\u003cp\u003eGenuine UMI Performance. Part number 4049.\u003c\/p\u003e\u003cp\u003eImported to order from our US supply partner — allow 7-14 days delivery.\u003c\/p\u003e","brand":"UMI Performance","offers":[{"title":"Default Title","offer_id":65734707151197,"sku":"4049","price":434.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1069\/0009\/5325\/files\/599f142ec058082aa4d51946272c4fc7_fa239053-6693-4670-a615-f7ca2ca6981f.jpg?v=1788360799","url":"https:\/\/performancepartsdirect.co.uk\/products\/umi-performance-4049","provider":"Performance Parts Direct","version":"1.0","type":"link"}