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:

• Nitro Reverse Thick Short Pinion
• 4320 Steel Shot Peened
• 4.88 Ring and Pinion for Dana 60

Fits:

• 2017+ Ford F250/F350 Super Duty High Pinion Front Axles
• Differential: Dana Model 60 Rev Thick
• Gear Ratio: 4.88
• Tooth Count: 39/8
• Pinion Splines: 29
• Ring Gear Bolts: 12 (not included)
• Manufacturer: Nitro Gear and Axle
• Warranty: 2 Years