Nitro Gear and Axle strives to provide the highest quality differential components available. We take the steps necessary to ensure our parts are dependable. Our product range is continually growing to meet the needs of consumers for new ratios and applications. At Nitro we know differentials, and know what it takes to provide you with high quality components.
Details:

• Ford 9 Inch, 31 Spline, Nitro Mini Spool
• Provides 100 Percent Traction At All Times
• Simple Design With No Moving Parts To Wear Out Or Break
• No Clutches To Wear Out And No Posi Additive Required
• Differential: Ford 9 Inch
• Axle Splines: 31
• Gear Ratio: All
• Material: 8620 Steel
• Manufacturer: Nitro Gear and Axle
• Warranty: Lifetime
• Sold As Each

Fits Vehicles:

• Cars/Trucks/SUVs w/Ford 9 Inch Diff w/Any Gear Ratio and 31 Spline Axles