Campagnolo, FC-CO053, Chainring, Teeth: 53, Speed: 11, BCD: 135, Bolts: 5, Outer, Alloy, Grey FREE shipping within United States over $50.00 Buy Online or Click & Collect Share Loading Facebook Like button... Campagnolo, FC-CO053, Chainring, Teeth: 53, Speed: 11, BCD: 135, Bolts: 5, Outer, Alloy, Grey FREE shipping within United States over $50.00 Buy Online or Click & Collect Share Loading Facebook Like button...