In this schematic the "Bolt(8x21)" is used most often.
A sample from the products for the Front Wheel (vl800ck6/ck7/ck8/ck9) include: Weight,wheel Balance 30g, Spacer(17.5x25x102), Tire,fr(130/90 16m/c 67h), Bearing.
The Bolt(8x21) is the cheapest item from this partsfiche.