{"product_id":"dura-grip-lsd-w-3-90-ring-pinion-gear-set","title":"Dura Grip LSD w\/ 3.90 Ring \u0026 Pinion Gear Set","description":"By incorporating a Yukon Dura Grip limited-slip differential (LSD) and an upgraded ring and pinion gear set, this kit enhances grip and reduces wheel slip under load.\n\nThis re-gear kit allows you to change to a more aggressive 3.90 gear ratio, which can lead to better acceleration. It is designed to fit GM 8.5-inch differentials and cases with ratios between 2.93 and 3.23. The kit includes a 12-bolt ring gear and a 27-spline pinion gear.\n\nThe kit's components include the Dura Grip positraction LSD (28 spline), a complete ring and pinion gear set, and all necessary bearings and installation hardware. This comprehensive package provides a substantial upgrade for performance and reliability.\n\nSpecific vehicle coverage includes '64 to '72 Olds 442, '65 to '71 GTO, and three other models, or any vehicle modified with a GM 8.5-inch differential.","brand":"Zumbrota Drivetrain","offers":[{"title":"Default Title","offer_id":52871749927224,"sku":"YGK2354","price":1693.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/dura-grip-lsd-w-3-90-ring-pinion-gear-set","provider":"MOTORMIA","version":"1.0","type":"link"}