Belt Drive CDX:EXP Rear Cog, Rohloff Splined, 22t

- Superlight machined aluminum cog with interior guide flange \n- Offers all of the benefits of the CDX plus 25% more wear surface, providing long, smooth, low maintenance across almost any terrain\n- Visit http://www.gatescarbondrive.com/ or download the Gates Carbon Drive iPhone app for drivetrain calculations and tension analysis