Website critique

hey all.
Some E commerce want me to do a layout design for some site they’re making. It’s a dirtbike tyre shop.

Here’s the site they have now.
http://www.motoz.com.au/Design.html

Here’s a site they really like and want theirs to be like.
http://www.gtyre.com/home.html

They want a grunge look to their site ( a clean grunge look I guess)

Here’s what I have so far. It needs some oomph though. Any suggestions?