17mm or 5/8″ Front. 1 1/4″ or 40mm standard or extended Rear.
1-1/4″ STANDARD REAR HUB
517A: 1-1/4″ STANDARD REAR HUB-BULLET
517E: 40MM STANDARD REAR HUB- BULLET
EXTENDED REAR HUBS
517F: 40MM EXTENDED REAR HUB- BULLET
517D: 1-1/4″ EXTENDED REAR HUB (OUT OF STOCK)
