To prevent inconvenient downtime that could hurt your ability to get to work, get the job done or take the family for a much needed vacation you'll want to protect your investment. We use them for everything from driving to work to using them as a work tool. To many of us, our trucks are an investment. With Dynatrac's Free-Spin kit you can easily change out the problematic unit bearings for durable, reliable, inexpensive and easy to maintain fixed spindle wheel bearings.