Strange Engineering D1522 Standard Series Steel Spool GM 8.5" 10-Bolt 28-Spline

The Strange Engineering D1522 Standard Series Steel Spool is an affordable and dependable solution for GM 8.5-inch 10-bolt rear ends. This full-size steel spool permanently locks both axle shafts together, ensuring both rear tires always turn at the same speed for maximum traction in drag racing, drifting, and other motorsports applications.

Key Features:

• Manufactured from 8620 forged steel for superior strength and durability
• Broached for 28-spline axles with splines left in stock location for easy changeover from OEM differentials
• Final turn operation performed after heat treatment to ensure dimensional accuracy
• Designed and machined by Strange Engineering, forged in the USA
• Weighs approximately 10.24 lbs - lighter than many competitors' lightweight spools
• Provides more rigid gear mounting to improve ring and pinion life
• Eliminates differential side gear failure and carrier deflection issues

Requirements: This spool requires 2.73 and numerically higher gear sets, and a c-clip eliminator kit (Strange part number D1583 for bearings, A1033 for c-clip eliminator kit) or aftermarket housing ends. Not recommended for street use.