{"product_id":"umi-performance-67-72-gm-a-body-spring-kit-2in-lowering","title":"UMI Performance 67-72 GM A-Body Spring Kit 2in Lowering","description":"A 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. 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\/cruising. The ride height is engineered for a 2” lowering 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.","brand":"UMI Performance","offers":[{"title":"Default Title","offer_id":42509637648466,"sku":"UMI4051","price":319.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4256\/2386\/files\/5e351a42f4554ca4d60ef2734758d7c1.jpg?v=1784119228","url":"https:\/\/www.vinniebuilt.net\/products\/umi-performance-67-72-gm-a-body-spring-kit-2in-lowering","provider":"VINNIEBUILT","version":"1.0","type":"link"}