Nukeproof generator 20mm sub axlefuelled by a passionate team of riders racers and mechanics nukeproof benefits from a wealth of knowledge and experience using this knowledge and experience nukeproof only produce products that we want to ride on and rely on every dayfeaturesgenuine replacement sub axle for the nukeproof generator 20mm hub material 7075 alloy buynukeproof wheels tyresfrom chain reaction cycles the worlds largest online bike store