Product Details: 4.10 ratio 248 mm ring gear 9.75" ring gear Thin ring gear 4.10 and down carrier Shimmed pinion for preload Parts Included: (1) ring and pinion (1) install kit (does NOT include the carrier bearings) Fits: Dana 60 high pinion axles Ultimate Dana 60 front axles 1978 - 2018 Ford F-250, F-350, F-450, F-550 Brand: Dana Spicer Part Number: Dana Spicer 700020-2 Warranty: 6 month warranty and case by case basis. All Spicer ring and pinion gears are designed and tested to meet original equipment specifications. When you purchase genuine Spicer ring and pinion gear sets, you can be confident the ring and pinion set will meet or exceed the exact Dana standards that original equipment manufacturers have relied upon for more than a hundred years. Axle Model: DANA 60 Gear Ratio: 4.10 Pinion Gear Tooth Quantity: 10 Ring Teeth Count: 41