4.86 Mod Rear w/o Tubes Saturday Night Special

The 4.86 Mod Rear w/o Tubes Saturday Night Special is a specialized rear axle center section designed for high-performance dirt track and oval racing. As a core component of a quick-change rear end system, this assembly allows racers to make rapid gear ratio adjustments to suit specific track conditions and surface grip. This particular model serves as the foundation for teams building a custom rear-end setup that requires a reliable, lightweight center section without pre-installed axle tubes.

Built with a focus on weight reduction and structural integrity, this unit features a magnesium center section that significantly lowers unsprung weight compared to traditional steel or aluminum housings. The assembly includes a robust 10-inch ring gear and a standard 4.86 ratio, providing the necessary torque multiplication for competitive short-track racing. By utilizing magnesium, Diversified Machine ensures that the Saturday Night Special can withstand the intense thermal and mechanical stresses of professional-grade competition while maintaining a lightweight profile.

This magnesium center-only unit is intended for professional chassis builders and race teams who require the flexibility to install their own specific axle tubes and internal components. The 4.86 Mod Rear w/o Tubes Saturday Night Special is compatible with standard quick-change gear sets, allowing for fine-tuning of the final drive ratio at the track. Its substantial construction makes it a premium choice for those competing in Modified or Late Model racing classes where durability and weight savings are paramount.