Yukon Dana 44 Super Joint Kit | 4340 Chromoly, Pair | 71-79 Bronco, 73-79 Ford Truck SKU: 8786

Dana 44 Yukon 4340 Chromoly Super Joint Kit: 4340 Forged

Upgrade your 1971-79 Ford Bronco or 1973-79 Ford F-Series Truck with these Dana 44 Yukon 4340  Chromoly Super Joint Kit , designed for use with upgraded chromoly axles (not compatible with stock axles). Made from 4340 forged material, these U-joints offer a significant strength boost—about 25% more than OEM joints—and an even greater 72% strength increase thanks to their larger trunnion size. They are engineered to withstand the rigors of extreme off-roading, eliminating common issues like needle-bearing disintegration and lock-up.

These U-joints feature a unique design that eliminates the need for bearings or bushings, preventing galling from metal-to-metal contact. Each cap and trunnion has its own 300 PSI-pressurized grease reservoir, keeping out water and debris during harsh conditions like water crossings or deep mud. The high-temp copper and graphite grease withstands extreme loads of up to 200,000 psi and temperatures up to 2000°F, ensuring reliable performance under the most demanding conditions.

• Fitment: Fits 1971-79 Ford Bronco & 1973-79 Ford Truck with upgraded chromoly  Dana 44 axles (will not fit stock axle)

• Material: 4340 forged steel for 25% strength increase over OEM

• Trunnion Size: 72% stronger with no needle bearings to disintegrate or lock up

• Design: Ionically bonded coatings to prevent metal-to-metal contact

• Grease System: Each cap has a 300 PSI-pressurized grease reservoir to keep out water and debris

• Durability: High-temp copper & graphite grease handles up to 200,000 psi and 2000°F

• Retention: Full circle snap rings prevent caps from working out of axle cups

For Bronco & Truck owners seeking superior strength and performance, these Yukon 4340 Chromoly Super Joints are the perfect upgrade to keep your rig running smoothly, even in the toughest conditions.