Ekar 13 Spd.The new C13 chain is a vital element of the Ekar mechanical groupset; along with providing an efficient drive, in gravel riding a chain must work perfectly to contribute to the derailleur smooth, quick gear shifts, and always remain secure. It must also be strong and durable and the Ekar C13 chain delivers impressively on all fronts. At just 4. 9mm wide the C13 chain is 0. 25mm narrower than the highly efficient Campagnolo 12 speed chain but delivers