Racers are a needy sort. Family and friends provide encouragement (i.e., don't object out-loud), supply technical support (repair things racers break - some mechanical, some not), and medical transport (when racers break themselves) They are often the racer's first official sponsors (providing some or all of the funding) to keep a racer on the track. Family and friends become a racer's first team organization, and some of the most tightly-knit communities in racing.
Family and Friends

Dream team: a partner with solid technical skills…

…willing to just lend a hand so you don’t fall over...

…and a smile to keep you from taking it all too seriously.

A friend who actually knows what he’s doing, there when you need him…

...who will wait with you, quietly, for grid call...

...with some silent encouragement.

Bench racing. At least as good as real racing.

A father who taught you to ride, race, and willing to fix the bike you just broke...

...and a brother willing to take all your PR photos.