Top Definition
The section of a bike frame that connects the head tube (where the forks go) with the seat tube (where the seat post goes). Usually 20-21 inches on a BMX bike. A shorter top tube generally means a shorter wheelbase, therefore making the front end easier to lift. Flatland frames commonly have shorter top tubes (~18.5") for ease of maneuvering. A tall rider may find bruised knees as a result of a top tube being too short.
Jack: Yo, my top tube is 22 inches!
Jill: Compensating for something?
Jack: Blow me.

<James winces as the cross brace collides with his junk>
Jeremy: HAHAHA! That's what you get for trying a flatland trick!
<James moans>
James: Yeah, I was looking into a flatland frame with a shorter top tube...
Jeremy: Panzy.
by Goedrik May 26, 2008
5 Words related to top tube

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.