Sram nx 11sp rear derailleurequipped with many of the same technologies and features seen on sram's higher spec xx1 model, this nx 11 speed mtb mech brings you slick shifting you can rely on'. '.strtoupper('i')t includes the renowned x sync 12t jockey wheels and a larger offset for fast and easy gear changes.sram  x horizon gear shiftingby eliminating unwanted chain movement, x horizon shifts faster, puts an end to ghost shifting and reduces shift force and chain slap'. '.strtoupper('a')nd with cage lock technology on this mountain bike specific rear mech, wheel removal and installation are easier than ever'. '.strtoupper('f')eatures       speed 11      compatibility all sram 11 speed flat bar shifters      bearings steel      cage size long      max tooth 42t  mounting standard hanger type mount  clutch type yes  technologies x actuation, cage lock, roller bearing clutch, x sync  x horizon design that reduces shift force, ghost shifting and chain slap     12 tooth x sync pulley wheels     fully compatible with all sram 1x drivetrains     most affordable fully featured 1x rear derailleur in the industry  manufacturer's reference code 00.7518.092.000   weight 322gtechnologiescage lock with cage lock technology in the rear derailleur, wheel removal and installation, as well as chain installation, becomes faster and simpler'. '.strtoupper('j')ust push the cage forward to create slack and lock it into place.roller bearing clutch roller bearing clutch rear derailleurs deliver maximum drivetrain stability, even through the most punishing terrain'. '.strtoupper('w')ith roller bearing clutch technology, derailleur bounce and chain slap are eliminated without sacrificing precision.x actuation developed specifically for sram 1x, x actuation keeps shifting sharp and consistent across the entyre cassette.x horizon the x horizon rear derailleur's lsquostraight parallelogram' design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force'. '.strtoupper('f')or quicker, more exact shifting, the large upper pulley offset design maintains a constant chain gap across all gears.x sync the sram x sync tall square teeth edges engage the chain earlier than traditional triangle shaped teeth'. '.strtoupper('t')he sharp and narrow tooth profile, as well as rounded chamfer edges, helps manage a deflected chain'. '.strtoupper('t')o provide the best possible performance in muddy conditions, the x sync chain rings have been designed with mud clearing recesses for the inner chain links and rollers'. '.strtoupper('e')ngineered in germany, x sync rings are an integral part of the sram 1x drivetrain.buy sram components from chain reaction cycles, the world's largest online bike store.