The Campagnolo EKAR GT 13-Speed rear derailleur has been designed using Campagnolo experience and inventiveness, developed and perfected in over 90 years of innovation. Technology, design and material have been chosen to satisfy the specific performance needs of all-road and gravel fans by combining rapid, precise and reliable shifting with high chain security, lightness, durability and strength.Design of the rear derailleur with medium-length housing is compatible with the different sizes of sprockets on all of the EKAR GT cassette combination optionsParallelogram's 2D trajectory is designed specifically for the EKAR GT 1x system so that shifting entails precise mechanical movements for best use of the 13 sprocketsCarbon fiber-reinforced polyamide and anodized 7075 and 6082 alloys are skillfully combined in the rear derailleur's body and cage, for the best blend of strength, durability and light weightLarge high-grade polymer pulley wheels guarantee optimum performance and high chain retention for reliability on whatever terrain you tacklePermanently engaged clutch for enhanced chain retention and minimal operational noise, can be locked forward for easy wheel removalStainless steel bolts with special surface treatment are used for strength and long-term resilience in the toughest conditions