Yamaha Clutch Hub YZ250 WR250 YZ WR 250 5NX-16371-00-00
You will receive a clutch hub. This part is the first part you install when assembling the clutch. The "teeth" of the metal clutch plates slide into the grooves of the clutch hub. Part is also referred to as the clutch center.
Applications:
1993-2010 YZ250
1994-1997 WR250Z