From the experience they gained in the Ecral 13s Groupset, Campaglo has developed a new sprocket set for Super Record 13 groupsets to achieve a smoother, faster, and more accurate shift. By thinning the sprocket and optimizing space between sprockets, we successfully added one sprocket without changing the standard of freewheel body. The already proven N3W standard is built right out without the need for adapters or dedicated hubs. The new tooth shape combined with a black chrome surface treatment provides increased noise reduction, abrasion resistance and durability for a long time. The change in gear ratio is more slower and allows you to chop the ideal cadence in all conditions from climbing to flat sections. The smaller number of teeth between sprockets, the more efficient cadence control, maximizing rider performance and reducing fatigue. There are four tooth configurations to adapt to any terrain or riding style, two of them start with 10T, and the other two begins with 11T: 10-29:10/11/12 ? 13/14/15/16/17/18? 20/23/26/29 10-33:10/11/12 ? 13/14/15/16/18/20 ? 23/26/29/33 11-32:11/12/13 ? 14/15/16/17/18/20 ? 23/26/29/32 11-36:11/12/13 ? 14/15/16/18/20 ? Additional sprockets are not just numbers for 23/26/29/32/36 Super Record 13. That means more choices, less teeth between sprockets, and always choosing the best cadence will greatly improve your experience on the saddle.