Yukon Gear Steel Spool For GM 14 Bolt Truck w/ 30 Spline Axles / 4.10 & Down

Built from high-strength steel, this Yukon Gear & Axle spool is designed for serious off-road performance. It replaces the differential gears in a standard open carrier, forcing both axles to spin at the same speed. This means you get 100% of the engine's power delivered to both wheels simultaneously, ensuring maximum traction when you need it most, like crawling over rocks or navigating deep mud.

This spool is specifically made for GM 10.5-inch 14-bolt truck axles with 30-spline axles and is intended for use with 4.10 gear ratios and numerically lower (e.g., 3.73, 4.10) or 4.56 and numerically higher (thick gears). Because it locks the differential full-time, it's not recommended for vehicles driven regularly on paved roads, as it can cause tire scrub and handling issues during turns. It's a popular choice for dedicated off-road rigs, rock crawlers, and drag racing applications where consistent, full-time traction is the priority.

Installation requires setting up the ring and pinion gears, so it's best suited for experienced mechanics or professional shops. This spool is a solid option for those looking to maximize their vehicle's off-road capability and is compatible with a wide range of GM trucks, including models like the Chevrolet Express 2500 and C3500. Always consult the manufacturer's installation guide for specific setup procedures and recommended gear ratios.