Strange Engineering D1558 Pro Series Lightweight Steel Spool Ford - 8.8 31-Spline

The Strange Engineering D1558 Pro Series Lightweight Steel Spool is a high-performance differential replacement designed for Ford 8.8 rear ends with 31-spline axles. This full-size spool locks both axle shafts together, forcing your rear tires to turn at the same speed for maximum traction in drag racing, drifting, and other motorsports applications.

Construction and Design:

• CNC-machined from 8620 forged chromoly steel for exceptional strength
• Lightened design reduces rotating weight while maintaining durability
• Critical dimensions left oversize before heat treatment, then finish-machined to precise specifications
• Weighs approximately 8.8 lbs—lighter than a traditional differential
• Forged in the USA and machined by Strange Engineering

Key Features:

• Broached for 31-spline axles with same spline locations as OEM differential
• Provides more rigid ring gear mounting to eliminate gear failure from case deflection
• Eliminates differential side-gear failure common in high-torque applications
• Accepts factory side bearings and races
• Requires C-clip eliminator kit or aftermarket housing ends
• Covered by Limited Lifetime Warranty

This spool is ideal for racers who need uninterrupted power transfer to both wheels without the complexity or potential failure points of a differential. Its simplified one-piece design delivers superior strength and reliability for high-performance applications.