This joint cup set features newly-designed parts to replace the kit-standard parts. They are made from a heat-treated alloy which features greater resistance to wear and tear. They are attached by pin and axle ring, which leads to smoother rotation and less tendency for the joint to come apart.

Set Contents
Reinforced Bevel Pinion Gear x3
Reinforced Joint Cup x4
F-350 Ring Gear x2
Differential Shaft x2
Compatible with 6x4 R/C tractor truck models.