<b>5.</b> On the subject of axle upgrades, we decided to throw in a pair of Mag-Hytec diff covers to aid in preserving our new investments. These covers are made from cast A356-T6 aluminum and are powdercoated black with machined cooling fins. Each cover has a magnetic drain plug to help trap worn gear material, as well as a magnetic dipstick to aid in maintenance. Each unit is fitted with a special O-ring that provides leak-free sealing, as well as several ports for temperature sensors. We also like that all the hardware provided with each cover was made of 303 stainless steel. With these covers installed, our gears should remain cool, even under extreme conditions.