The most expensive part in this assembly is the Rim (2.15-18).
A sample from the products for the 31 Rear Wheel include: Sprocket, Driven (43t), Tube (3r9), Collar Assy, Nut, Self-locking.
This 31 Rear Wheel diagram displays the required parts for the Wr250r 2009 32d5 Europe 1h32d-300e1 31 Rear Wheel.
