Teraflex, Heavy Duty Ball Joint Pair without Knurling, for 99-18 Jeep Wrangler JK, Wrangler Unlimited JK & Grand Cherokee WJ

TeraFlex HD ball joints are engineered to handle the increased load caused by oversized tires and offset wheels. The upper ball joint incorporates hard sintered wear bushings to handle extreme side load demands with out failure and includes an easy top access grease port for simple maintenance. The lower ball joint features adjustable preload when assembled as well as future adjustments. The advanced grease system allows grease servicing to be performed without axle shaft removal, even with larger RCV shafts. Dual machined grease passages in the lower joint housing assembly provides lubrication access without affecting the ball joint load surface. The lower ball joint also eliminates the nylon ball socket wear sleeve that is prone to failure.