Wheel picture courtesy of Motorcycle-USA.com, Dirt Bike Tire Changing Gallery
http://www.motorcycle-usa.com/1425/Motorcycle-Photo-Gallery/Dirt-Bike-Tire-Change.aspx

Tape for sealing spoke ends on inside of your rims
Polyken 231 Military Grade Duct Tape: 1 in. x 60 yds. (Amazon.com)
http://www.amazon.com/gp/product/B000QE9I9O/ref=noref?ie=UTF8&s=hi&psc=1