Richmond Gear Ring & Pinion Set, Dana 60, 4.56:1 Ratio - Competition... Ring and Pinion Gear Sets from Yukon Gear and Axle are designed to perform in the most demanding of conditions. 9.75 ring gear diameter 29 spline pinion 12 ring gear bolts 5.13 ratio Thick gear for 4.11 and down carrier Dana Spicer 706033-4X Ring and Pinion Gear Set Kit 4.56 Ratio (41-09 Dana 60 Ring And Pinion Yukon Gear Axle High Performance Replacement Ring Pinion Gear Set For Dana 60 In A 513 Ratio Thick Ring And Pinion Gear Set RCAWD Center Gearbox Combo Transmission Mount Plate for FMS 1/24 FCX24 FMS 1/18 Upgrades Parts(Red