The shimano dura ace c24 carbon clincher front wheel weighs a minimal 618 g this is achieved by reducing the rim wall thickness to 07 mm and using a patented phosphoric acid anodizing process to bond the carbon fibre to the alloy the shimano dura ace c24 carbon clincher front wheel benefits from this process further as it allows a higher lateral rigidity featuring stainless steel straight pull bladed spokes and a cold forged machined aluminium hub shell and oversized 7075 alloy ax