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Today we're going to review part number 3920. This is the Redline bearing race. This bearing
race will fit the inner bearing part number 3984. This race is designed to be installed
into the hub assembly. That will give a spot for the bearing rollers to ride on the inside
taper of this race. The bearing will install in there and ride on this race.
The part number on this is stamped on there, it's 3920. The most important part of this
is the outer diameter measurement on the race, because that's the size that will be pressed
into your hub assembly. It is measured in thousandths of an inch, so it does require
the use of a digital caliper to get a correct measurement. Just to show you here, the outer
diameter on this part is going to be 4.438 inches. That should do it for our review on
part number 3920..