Campagnolo's Ekar 13-Speed Cassette offers a huge gear range and form a key part of their Ekar Groupset; without the cassette, Ekar would not be the marvel of engineering it is!Wide-range 13-speed cassette designed for gravel and all-road ridingProvides a wide gear range to match or exceed any 2x drivetrain2-piece steel and aluminium construction is lightweight but incredibly durableOnly compatible with 13-Speed Ekar derailleur and Campagnolo N3W freehub bodies13 sprockets help make a truly versatile 1x system possible with the introduction of the 9 & 10-tooth cogs that makes Ekar work so perfectly for gravel and all-road riding. Not only is a wide range of gear ratios possible, but natural, progressive cadence-matching shifts are maintained, offering a uniquely satisfying ride. The range of gears offered by these cassettes match or exceed any 2x system with no wastage. Closer low gear spacing for smooth cadence progression is matched with wider high gear spacing for top end speed on a