[mtbdemon]

Originally Posted by biensur22

There are a few 640s already doing it! Here's some info for you if you want to join in on the fun.

640 adventure M1K build thread:
http://advrider.com/forums/showthread.php?t=824377

NORRA's M1K official site:
http://www.norra.com/mexican1000.php

Very cool! I would be interested in seeing your current pipe set up. I'm going to take my stock pipes off so to keep them nice and go with a single pipe to save weight.