Spotted this one in the Jan/Feb. issue of Pull Magazine: Michael Von Sothen’s custom OS20 Alpha prototype.

This rig is tricked out.

Check out this spec list (in addition to the OS20 wheels), it features:

• Hydraulic disc brakes
• Gates belt drive (with a custom split dropout)
• 20 mm axles
• One-piece CNC’ed BB junction
• 3-D headtube.

That’s a lot of stuff going on here.

Wow.