Baja Tested and Baja Approved The Addictive Desert Design's Ford Raptor Stock Replacement Spindle will work with both stock and replacement upper control arms, lower control arms, tie-rod ends, and brake kits. This spindle is a direct replacement with strength engineered into all of the right places. Why is this better than a stock spindle? The new ADD Stock Replacement Spindle is the perfect upgrade for your Ford Raptor or F150 Raptor conversion. One of the features this spindle offers is the integrated progressive turn stop which ensures matched factory turning radius without having to limit or modify any of the stock components to operate safely. This spindle has been rigorously evaluated and cycled in Solidworks and real world tested, ensuring smooth operation, optimal strength, as well as eliminating any possibility of crashing between components. In addition our upper and lower mounts are machined out of 4130 Chromoly providing optimal strength and long term durability over the stock part. The spindle also boasts a heavy duty double shear tie rod mount, which is designed to work with our billet aluminum tie rod upgrade kit, and results in a much better integration between components, reducing slack and bump steer under extreme conditions. This is a must have upgrade for any Ford Raptor or F150 Raptor conversion.