Quote:
Originally Posted by Rusty
How much do you want to pay for a MT bike?
Frame size is based on how tall you are. Stand over the bike. On a MT, there should be about 4" between the crossbar and your crotch. Road bike 2".
I have a Trek 990 MT bike. It's an older cro-moly frame.  The ride is between the flexy Ti frame and the stiff aluminum frame. Carbon frame are a different animal. They can be anything from flexy to down right super stiff. The other thing is tire size. 26" or the new 29". |
The stand over height is an old school measurement style. It's actually based more on seat tube length. A good bike shop will be able to properly fit you.
Aluminum frame is the way to go, especially since he'll probably be mouting the battery pack on the downtube.