Check out any of the nine Starter Clutch components enlisted.
A sample from the products for the Starter Clutch include: Shaft 2, Gear, Idler 1, Gear, Idler 2, Bearing, Cylindrical(51y).
The most reasonably priced component used on the Ybr250 2007 5d11 Europe 1f5d1-351f1 Starter Clutch is the Bolt.