This replacement derailleur hanger 619 is CNC machined from 6061 aluminum in our Colorado shop to exacting tolerances. It features a black anodized finish, includes two M8x12mm low profile socket head screws, and is compatible with Santa Cruz part #23-14539 frames with a 135mm/QR rear axle. Note: Derailleur Hanger 620 fits the same frames but is for 142mm thru axle.
