Universal joints are a noglory item. You can't chrome 'em, and they don't make you go faster. However, worn U-joints are a safety hazard and should be replaced at the first sign of a "clunk" in the ...

Universal joint: A mechanical device that transmits torque and/or rotary motion between two shafts, while permitting angular variances. If you 'wheel your rig on a regular basis, chances are you've ...