Nitro Gear and Axle Spools and Mini Spools are the unit of choice for drag racing and hardcore off-road use. The no-frills design of the spool features no moving parts and provides 100 percent traction to both tires at all times. When traction and strength can not be compromised, Nitro spools will not let you down. Precision manufactured from the highest quality materials, using state-of-the-art machining and heat treating process.
Details:

• GM 8.5 Inch 10 Bolt, 30 Spline, 3 Series, Nitro Full Steel Spool
• 100 Percent Traction - 100 Percent Of The Time
• Differential: GM 8.5 Inch
• Gear Ratio: 2.73 and Up
• Axle Splines: 30
• Material: Steel
• Ring Gear Bolts: 10 (Not Included)
• Manufacturer: Nitro Gear and Axle
• Warranty: 1 Year
• Sold As Each

Tech Note:

• Uses Large Bearings

Fits Vehicles:

• GM Cars/Trucks/SUVs w/GM 8.5 Inch, 10 Bolt, (2.73 and Up) w/30 Spline Axles