{"product_id":"gm-8-5-4-88-ratio-ring-pinion","title":"GM 8.5\" 4.88 Ratio Ring \u0026 Pinion","description":"The USA Standard Ring \u0026amp; Pinion gear set is engineered for GM 8.5-inch differentials, offering a 4.88 ratio for enhanced performance.\n\nThis gear set features a robust construction with an 8.50-inch ring gear diameter, a 30-spline pinion, and 10 ring gear bolts, ensuring durability and reliable power transfer. It is specifically designed to fit GM 8.5\" and 8.6\" axle applications.\n\nKey specifications include a 4.88 gear ratio, 30 spline count, and 10 ring gear bolts. The product is manufactured by USA Standard Gear and carries the Zumbrota Drivetrain part number ZG GM8.5-488.\n\nInstallation of a ring and pinion gear set typically requires specialized knowledge and tools, and professional installation is often recommended to ensure proper setup and performance. The product is currently on backorder, with shipping available upon restock.","brand":"Zumbrota Drivetrain","offers":[{"title":"Default Title","offer_id":52871823556920,"sku":"ZG GM8.5-488","price":330.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/gm-8-5-4-88-ratio-ring-pinion","provider":"MOTORMIA","version":"1.0","type":"link"}