PowerTrax / 3991003RDE

Unleash your vehicle’s full potential with our Performance Differential Pinion Shaft—engineered for racers, builders, and off-road enthusiasts who push the limits. Built to handle extreme torque loads and aggressive driving conditions, this shaft ensures your ring-and-pinion stay perfectly aligned under maximum stress. Constructed from premium alloy steel and heat-treated for superior hardness, it delivers the toughness needed for high-horsepower applications and prolonged abuse. The precision-ground surfaces reduce internal friction and ensure smooth gear mesh, translating to quicker power delivery and minimized drivetrain losses. When every foot-pound counts, you need a shaft that won’t flinch. This design resists torsional stress and pitting under heavy load, making it ideal for drag strips, lifted trucks, rock crawlers, and turbocharged builds. It's engineered to meet or exceed OE performance standards for strength, fitment, and reliability. Thanks to its easy drop-in fit with no modification required, you’ll spend less time wrenching and more time chasing performance. Whether you're dialing in a custom setup or replacing a worn unit in a built differential, this pinion shaft delivers the backbone your drivetrain demands. Push harder. Drive stronger. Trust your build.

CROSS PIN- FORD 8.8" 7/8"-OPEN