Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford and Toyota. They are precision machined using computer controlled processes, heat treated, CNC triple-lapped and Rockwell tested for hardness. These extra steps ensure excellent fitment, ideal contact pattern and smooth, quiet operation.
Details:

• Ford 9.75 Inch 8620 Ring and Pinion Set - 4.11 Ratio
• Differential: Ford 9.75 Inch
• Gear Ratio: 4.11
• Tooth Count: 41/10
• Pinion Splines: 31
• Ring Gear Bolts: 12 (not included)
• Manufacturer: Nitro Gear and Axle
• Warranty: 2 Years
• Sold As A Set
• SKU: F9.75-11-411-NG

Fits Vehicles:

• 2011-Present Ford F150 w/ Ford 9.75 Inch Rear Axle

Tech Notes:

• Use MKF9.75-D-00-07 conversion kit that will allow fitment of 2011-Present type Ring and Pinions
• (Nitro p/n F9.75-11-xxx-NG) in 2000-2007 Ford 9.75 inch rear axles
• Use MKF9-75-D-08-10 conversion kit that will allow fitment of 2011-Present type Ring and Pinions
• (Nitro p/n F9.75-11-xxx-NG) in 2008-2010 Ford 9.75 inch rear axles