02-19 HONDA CRF450R: Pro Wheel Rear Wheel Spoke Kit (18") Pro Wheel developed their Spoke Kit to not only replace the O.E.M. spokes and nipples but upgrade them for race durability. The spokes are made from swaged stainless steel for a higher tensile strength over O.E.M. and prevents stretching. A gradual continuous hammering technique is used that improves the oscillating load capacity.