what does it take to become a mountain bike racer?

Answer 1

Balls. Big ones, made of steel. And talent. And a great bike that fits your geometry. Lots of hardwork. Dedication and committment to getting better. Practice and training. Willingness to give up other things and focus on racing. The same things it takes to become any type of serious competitive athlete.

You must also enter in events. The better you do when you race the more notable your name will become. Start small and work up.

Good luck!