4
2. WHAT IT'S CALLED
1. frame
2. top tube
3. down tube
4. seat tube
5. chain stay
6. seat stay
7. head tube
8. fork
9. wheel
10. tire
11. tread
12. sidewall
13. valve stem
14. tube
15. rim
16. spokes
17. hub
18. quick release
19. bottom bracket
20. crank
21. chainrings
22. chain