REAR MECH GEAR DERAILLEUR HANGER FRAME DROPOUT
Trek Part # 304639
**Trek recommends that you apply a removable thread-lock (i.e LOCTITE 243) to the threads during re-assembly. Failure to do so may result in fasteners loosening during use.
Please compare your existing rear mech hanger to the pictures supplied to ensure the correct fitting before purchase. You can click on/hover over the image to view it in closer detail.