I think its truth in advertizing. Nowhere does it say "Genuine Audi". It does say "Cast Iron". IIRC, and based on Ned's EM, the real RS2 EMs are not cast iron but a nifty alloy of steel. Based on the "Cast Iron" upfront and the price, I smell Chinese or Taiwanese knock-offs. Of course, I could be wrong. In which case, buy two. Dave F.