sorry talking about front and rear, I was not very clear! Front cup and standard ducts are flexible yes, but the clips that hold them on are weak. Wouldn’t run the expensive cup car ducts without multiple cable ties to prevent loss when going down the road. I agree, GT2 rear ducts are overpriced for what they are (all the 996 ducts are, whether it be front, rear, cup car, street car!). Amazing what Porsche can charge for a few bits of plastic.