Ring & Pinion Gear Kit Package Front & Rear with Installation Kits fits Toyota 8.4/8 inchIFS Differential (Without Factory Locker. Fits 3.91 & Up Front Case) 4.88 Ratio Features: Rear: 30 Spline Pinion 4.88 Gear Ratio For Toyota 8.4 inch. Rear & 8.0ifs Clamshell Front Differential Rear: 12 Bolt Ring Gear Rear: 8.125 inch Ring Gear Diameter Fits 4 Series Front Carrier Case Details: AAP Selling Package Quantity UOM: EA Aap uda 12: EA Aap uda 22: 1 Fitment Notes: Differential Gear and Install Kit Package 8.4 inch. T100 Rear Without Factory Locker 8 inch. Front 4.88 Ratio Includes Front and Rear Ring and Pinion Sets, With Master Overhaul Kits Front Gear Fits 4 Series 3.91 & Up Carrier Case