This CNC-machined rear derailleur housing is designed for road bike rear derailleurs, serving as a direct replacement component. Made of aluminum with a metal finish, it provides a precise, rigid structure with a lightweight feel. The design features openwork cutout sections and a geometric triangular arm shape. The assembly includes a large lower pulley and upper pulley with black toothed guide wheels, a central silver axle, and visible mounting hardware. It helps support effortless chain guidance on the bike.
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