Campagnolo EKAR Chain - 13-Speed 117 Links Silver With C-LinkCampagnolo EKAR Chain 13 Speed 117 Links Silver With C Link. The Campagnolo C13 EKAR Chain was developed specifically for the EKAR 1x13 speed gravel system. Wide narrow design allows for efficient drive smooth shifts and high security The narrow profile is lightweight strong and efficient Strong durable links feature different grades of steel and coatings for strength and to withstand wear Unique ultrasound bath lubrication impregnation system for