Strange D1549 33-Spline Lightweight Pro Race Spool for GM 12-Bolt, 4-Series

The Strange D1549 Lightweight Pro Race Spool is engineered for high-performance racing applications using a GM 12-bolt rear end with 4-series gears. Designed for full-size vehicles, this spool provides a solid connection between the axle shafts, forcing both rear wheels to rotate at the same speed for consistent power delivery and dependable traction on the track. Its 33-spline configuration is compatible with matching high-strength axle shafts and is suited to demanding drag racing and competition setups.
Constructed from durable steel, the Strange D1549 balances strength and weight to support race-focused performance without unnecessary mass. The lightweight Pro Race design helps reduce rotating weight while maintaining the durability required for repeated launches and hard acceleration. Precision manufacturing supports proper fitment within compatible GM 12-bolt housings and helps provide reliable operation when used with correctly matched drivetrain components.
This Strange spool is intended for racing use and should be installed by a qualified professional familiar with GM 12-bolt differentials, gear ratios, axle spline counts, and competition driveline setup. Verify housing compatibility, 4-series gear requirements, axle shaft spline compatibility, and clearance before installation. The D1549 is sold individually and offers a practical foundation for building a dependable, traction-focused rear axle assembly.
Feature: Brand: Strange
Feature: Part Number: D1549
Feature: Application: GM 12-bolt rear end
Feature: Gear Series: 4-series
Feature: Spline Count: 33 spline
Feature: Construction: Steel
Feature: Design: Lightweight Pro Race spool
Feature: Vehicle Fitment: Full-size applications
Feature: Quantity: Sold individually
Feature: Intended Use: Racing and competition applications

Features:

• Brand: Strange

• Part Number: D1549

• Application: GM 12-bolt rear end

• Gear Series: 4-series

• Spline Count: 33 spline

• Construction: Steel

• Design: Lightweight Pro Race spool

• Vehicle Fitment: Full-size applications

• Quantity: Sold individually

• Intended Use: Racing and competition applications