{"product_id":"4-56-ratio-31-spline-trac-lok","title":"4.56 Ratio 31 Spline Trac-Lok","description":"The Yukon Dropout Assembly is a complete, fully assembled third member designed as a performance upgrade for Ford 9” differentials. This unit comes pre-shimmed and backlashed to specification, ready for installation by bolting onto the differential housing. It features a 4.56 gear ratio and 31 spline count, paired with an upgraded Trac-Lok clutch-type limited slip differential to enhance torque bias and traction.\n\nThe assembly utilizes a nodular iron case, which increases rigidity and improves power handling capabilities. This design minimizes deflection, ensuring consistent gear contact and contributing to a longer service life. Please note that this dropout assembly does not include a yoke.\n\nYukon Gear and Axle backs this dropout assembly with a 1-year limited warranty, and they also offer an optional Extended Service (YES) Plan for comprehensive coverage against failures for the life of the vehicle, with certain restrictions applying.","brand":"Zumbrota Drivetrain","offers":[{"title":"Default Title","offer_id":52870959300920,"sku":"YDAF9-456SVO-31","price":1606.89,"currency_code":"USD","in_stock":true}],"url":"https:\/\/store.motormia.co\/products\/4-56-ratio-31-spline-trac-lok","provider":"MOTORMIA","version":"1.0","type":"link"}