Hope pro 2evopro 4 front conversionthis conversion kit enables you to use your favourite pro 2 pro 2 evo or pro 4 front hub with the newest road gravel or cyclocross bikes thru axle forks features converts standard non boost pro 2 pro 2 evo or pro 4 front hubs to suit 12mm thru axle forks hope part numberhub482buyhope componentsfrom chain reaction cycles the worlds largest online bike store