{"product_id":"4-56-ring-pinion-gear-set-for-jeep-cj5-cj7-cj8-sj-j-series-amc-20-8134410-porc-off-road-products","title":"4.56 Ring \u0026 Pinion Gear Set for Jeep CJ5 CJ7 CJ8 SJ J-Series AMC 20 | 8134410 | PORC Off Road Products","description":"\u003cdiv class=\"porc-product-listing\"\u003e\n\n  \u003csection class=\"porc-intro\"\u003e\n    \u003cp\u003e\u003cstrong\u003eRestore factory drivetrain performance with an OE-style 4.56:1 ring and pinion gear set.\u003c\/strong\u003e\u003c\/p\u003e\n    \u003cp\u003e\n      Designed for Jeep vehicles equipped with the AMC Model 20 rear axle, this precision-machined ring and pinion gear set features a 4.56:1 gear ratio to restore proper differential operation, dependable power transfer, and long-lasting drivetrain performance.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"porc-quick-specs\"\u003e\n    \u003ch3\u003eQuick Specs\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Ring \u0026amp; Pinion Gear Set\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAxle:\u003c\/strong\u003e AMC Model 20 Rear Axle\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eGear Ratio:\u003c\/strong\u003e 4.56:1\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Differential Rebuilds \u0026amp; Gear Ratio Changes\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eReplacement Style:\u003c\/strong\u003e OE-Style Replacement\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"porc-fitment\"\u003e\n    \u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e1976-1983 Jeep CJ-5 with AMC Model 20 Rear Axle\u003c\/li\u003e\n      \u003cli\u003e1976-1986 Jeep CJ-7 with AMC Model 20 Rear Axle\u003c\/li\u003e\n      \u003cli\u003e1981-1986 Jeep CJ-8 with AMC Model 20 Rear Axle\u003c\/li\u003e\n      \u003cli\u003e1980-1986 Jeep SJ \u0026amp; J-Series with AMC Model 20 Rear Axle\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"porc-reference\"\u003e\n    \u003ch3\u003ePart Numbers\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eOE Part Number:\u003c\/strong\u003e 8134410\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eInterchange Numbers:\u003c\/strong\u003e J8134410\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"porc-details\"\u003e\n    \u003ch3\u003eProduct Details\u003c\/h3\u003e\n    \u003cp\u003e\n      The ring and pinion gears determine your axle's final drive ratio and play a critical role in vehicle performance, torque delivery, and differential operation. Replacing worn gears or changing gear ratios during a differential rebuild helps restore smooth operation, proper gear mesh, and reliable power transfer.\n    \u003c\/p\u003e\n    \u003cp\u003e\n      Manufactured as an OE-style replacement, this precision-machined 4.56:1 ring and pinion gear set is engineered for dependable fit, durability, and long service life, making it an excellent choice for axle repairs, restorations, or complete differential rebuilds on compatible AMC Model 20 rear axle applications.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"porc-package\"\u003e\n    \u003ch3\u003ePackage Contents\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e1 Ring Gear\u003c\/li\u003e\n      \u003cli\u003e1 Pinion Gear\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/section\u003e\n\n  \u003csection class=\"porc-note\"\u003e\n    \u003ch3\u003eFitment Note\u003c\/h3\u003e\n    \u003cp\u003e\n      Please verify your axle model, gear ratio, and original part number before ordering to ensure proper fitment. Ring and pinion gear sets must match your differential application and intended gear ratio. Professional installation and gear setup are recommended to ensure proper backlash, bearing preload, and long-term performance.\n    \u003c\/p\u003e\n  \u003c\/section\u003e\n\n\u003c\/div\u003e","brand":"PORC Off Road Products","offers":[{"title":"Default Title","offer_id":43479506681923,"sku":null,"price":599.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/4278\/0227\/files\/J8134410.png?v=1781049648","url":"https:\/\/extoffroad.com\/products\/4-56-ring-pinion-gear-set-for-jeep-cj5-cj7-cj8-sj-j-series-amc-20-8134410-porc-off-road-products","provider":"EXT Offroad","version":"1.0","type":"link"}