Just got off the phone with this company and they are selling this 520 chain kit for our bikes. $148.00 shipped! Just thought to drop a line to you all.
Steel sprockets. EK Xring chain and Superlite steel rear sprocket.
They are advertising longest lasting 520 set up on the market right now.
Sounds good to me.

Super Bike Supply - Your source for sportbike parts and accessories geared for racing and street bikes and their owners. : EK 520 Conversion -