Image 1 of 2 Image 2 of 2 Replacement fins for diffuser from $15.00 Style Fin: Select Style Fin Option 1 Option 2 Finish: Select Finish UNPAINTED RAW Powdered Satin Black Fin to replace: Select Fin to replace Drivers LARGE Passenger LARGE Drivers small Passenger small Add To Cart Added! This listing is for replacement fins on the Focus ST V1 Rear Diffuser.Choose between Style # 1 and Style #2 (new) SEE PICTURES.100% aluminum construction.Fresh hardware.Can be ordered raw (unfinished aluminum) or Powder coated. This listing is for replacement fins on the Focus ST V1 Rear Diffuser.Choose between Style # 1 and Style #2 (new) SEE PICTURES.100% aluminum construction.Fresh hardware.Can be ordered raw (unfinished aluminum) or Powder coated.