a little simplistic but overall a nice-looking and functional site. one suggestion: let the image that can enlarge change with the specific build kit. right now an image of the XTR kit enlarges no matter which build kit you're looking at (and i KNOW I'm not getting an XTR crank with a $3k bike).
also you've got a little bug when you click to close the flash enlarge window that just pushes the button over and requires a second click to close the window.
lastly, how about a chumba racing team button on the main screen?