Performatek vented rear rotors for deDion chassis. Mount to Alfetta, GTV6, Milano, 75 V6 & 75 Twin spark. Dimensions identical to SZ30 rear rotors – now NLA from Alfa or Brembo. Two piece, with curved vanes to move more air. Bolt up as OEM, with either M10 or M8 mounting bolts. Stock calipers (original or spider) require Performatek spacer kits. Sold as a pair.