Zipp ZR1 Front Hub Axle Adaptor End Cap Set 12x100 mm Disc Centerlock Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Zipp ZR1 Front Hub Axle Adaptor End Cap Set 12x100 mm Disc Centerlock Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...