The Campagnolo Ekar GT 13-speed cassette offers an optimal riding experience and helps achieve peak performance on challenging routes and terrains. Small jumps between the first cassette cogs ensure an ideal cadence. Larger jumps between the bigger cogs adapt to all types of routes. With the appropriate locks and adapters, the N3W cassette is compatible with all current and future 12-speed, 11-speed, and 10-speed groups from Campagnolo.