Here's some info from QBP.


CDX11 Polychain

* For use only with CDX11 System which requires the purchase of a ring, cog and belt
* The CDX11 system is intended for Mountain and Commuting applications and can be run with a fairly low belt tension
* Requires the Split Drop Out (FS8000) or frame modifaction for installation
* 11 pitch, 11mm wide and 1342mm long



CDX8 Polychain

* For use only with the CDX8 System that requires the purchase of a ring cog and belt
* The CDX8 system is intended for 'cross and track applications and requires higher belt tension
* 8 pitch, 1mm wide, 1280mm long

Both look like this.




CDX11 Cog

* For use only with CDX11 System which requires the purchase of a ring, cog and belt
* The CDX11 system is intended for Mountain and Commuting applications and can be run with a fairly low belt tension


CDX8 Cog

* For use only with the CDX8 System that requires the purchase of a ring, cog and belt
* The CDX8 system is intended for 'cross and track applications and requires higher belt tension
* Requires the Carbon Drive Split Drop (FS8000), an elevated chainstay or frame modification for installation




The Rohloff cog will be used on the CDX8 system.

This website shows the retail prices.

http://www.bikemannetwork.com/biking/c/COMPBDS

QBP is out of stock on everything right now.