Derailleur Hanger 138 PIN ARELLO,Dogma,F CX,Gan,Razha,P aris,Eddy Merckx,EMX5,EM X3 Screw Bolt: M4x8 Flat Head Screw Description: Hanger 138 has a similar geometry as Hanger 120 . However, the threaded fastener holes on Hanger 138 are 22.5mm apart center to center, whereas the fastener holes on Hanger 120 are 18.5mm apart center to center. Important :
Always check the photo of the hanger we recommend against your hanger. If it does not look correct, it will not fit.
Please contact us if you are unsure of which derailleur hanger you will need.
Derailleur Hanger Fit is based on all of the following: