The SHIMANO ALIVIO M3100 rear derailleur delivers a low profile design that lets you ride aggressively with fewer interruptions thanks to its SHIMANO SHADOW design.
Replacement bottom bracket for Power Drive splined cranksets. The stiff forged hollow chromoly spindle is supported by a pair of sealed industrial cartridge bearings. Additional weather protection comes from double “Snap” seals.
Premium trunk mount bike carrier with raised platform designed to keep the rear lights and license plate visible, and fits wide range of vehicles including those with a spoiler.