Shimano AD17-M Front Derailleur Clamp Shim, reduces 34.9mm to 31.8mm

$9.49
By Shimano

Shimano Front Derailleur Seat Tube Shims

  • Derailleur = the size of the clamp on the front derailleur you have
  • Frame = the size of the seat tube the derailleur plus shim will fit
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