Wheels Manufacturing Dropout Hanger #27 Upgrade or replacement rear derailleur dropouts; stiffer and more rigid to improve shifting performance CNC machined from solid 6061 aluminium to exact tolerances Stiffer than any original equipment hanger which improves shifting performance Still breaks before your frame does to perform its main function Direct replacement for original equipment with guaranteed fit Black anodised for extra scratch and damage resistance Laser etched for easy part identification Jamis/Marin/Mongoose/Schwinn.
