The BOX COMPONENTS One 11-speed rear derailleur with extra-long clevis is a top-of-the-range derailleur featuring several technologies such as Tri-Pack™ technology, which provides an innovative chain-tension spring that significantly reduces Box Components One 11-speed derailleur clevis rebound and chain slap. The Tri-Pack™ system also maintains tension for better chain winding. The strength of this spring can be adjusted for the best feel at the shifter and chain retention Box Components. This technology has proved its worth on one of the world's biggest freeride events which is the 'Red Bull® Rampage'. The BOX COMPONENTS One 11-speed rear derailleur with extra-long clevis is compatible with the BOX COMPONENTS One 11-speed shifter and also with the BOX COMPONENTS Two 11-speed shifter.
