A sample from the products for the Rear Wheel (model Y/k1) include: Spacer,rr Axle,r, Cap,rr Axle,l, O Ring(d:2.1,id:65), Bearing.
Check out any of the twenty-eight Rear Wheel (model Y/k1) components enlisted.
The Bolt(6x16) is the cheapest item from this partsfiche.