Campagnolo Ekar 13 Speed CassetteCAMPAGNOLO EKAR 13 SPEED CASSETTE The 1x system works best for gravel, with the 13 speed configuration enabling that to work across a full range of gearing ratios and what underpins that is the use of a 9 tooth sprocket. The precise 13 speed Ekar is available in three gearing variants, reflecting the different specialisms within the diverse gravel scene, and each providing the smoothest gearing progression and the optimum delivery of range. On all