(Video, embedded below.) BMX frames have a smaller front triangle than most bikes, so his build needed to be extremely compact. To that end, it uses two small-sized motors connected together with ...

He didn't have to look far when he pitched a new exhibit on BMX racing to the museum's board of directors — Matthews raced the bikes when he was a kid and has a collection of them.

BOX JUMPS ON BERMS. THE BMX RIDERS BUILT THEMSELVES, ALL DONE BY HAND. ALL HAND. JUST SHOVEL, SHOVEL, RAKE AND A PICK. THAT’S ABOUT IT. GREGORY SETTLES AND OTHER BIKE MOTOCROSS ENTHUSIASTS HAVE ...