Ribble CR3 Carbon Frame. Whether you are looking for a road disc bike, cyclocross bike, gravel bike or commuter bike the CR3 with its big tyre clearance, disc brakes & mudguard fittings has it all. Full internal cable routing & either mechanical or hydraulic compatible frame. This frame's key features are: tapered head tube, fully internal cables, rear disc brake caliper positioned on the chain stay (not seatstays) & mudguard eyes.