{"product_id":"usa-standard-3-90-ratio-8-875-ring-gear-set","title":"USA Standard 3.90 Ratio 8.875\" Ring Gear Set","description":"The USA Standard Ring \u0026amp; Pinion gear set is engineered for enhanced performance and reliability in GM 12-bolt passenger car differentials. This specific set offers a 3.90 gear ratio, providing a balance between acceleration and cruising capabilities for a variety of applications.\n\nConstructed with precision, the gear set features an 8.875\" ring gear diameter and utilizes 30 spline pinion and 12 ring gear bolts for secure and durable engagement. This set is designed as a direct replacement or upgrade for existing GM 12-bolt rear ends.\n\nKey specifications include: 8.875\" ring gear diameter, 30 spline pinion, 12 ring gear bolts, and a 3.90 ratio. The product is branded by USA Standard Gear, a known name in drivetrain components.\n\nConsult with Zumbrota Drivetrain's technical support for specific fitment questions or installation guidance to ensure optimal performance and compatibility with your vehicle's drivetrain.","brand":"Zumbrota Drivetrain","offers":[{"title":"Default Title","offer_id":52871821951288,"sku":"ZG GM12P-390","price":299.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/usa-standard-3-90-ratio-8-875-ring-gear-set","provider":"MOTORMIA","version":"1.0","type":"link"}