Wide motorcycle swing arm assembly

A wide swing arm assembly for a motorcycle frame having a horizontal suspension system, a frame pivot axis and a frame span, said swing arm assembly comprising:

• a first swing arm, a second swing arm, a spanning bar and a frame pivot bolt;
• each said swing arm having a frame end;
• at least one said swing arm having an axle end;
• said first swing arm and said second swing arm each having an axis hole and a spanning bar attachment point at said frame end;
• said spanning bar having a first end and a second end;
• said spanning bar said first end attached to said first swing arm said attachment point;
• said spanning bar said second end attached to said second swing arm said attachment point;
• and
• said first swing arm axis hole and said second swing arm axis hole set apart a distance at least as great as said frame span.

The method for modifying a motorcycle frame to accommodate a wide tire, said frame having a standard swing arm, a horizontal shock system, a frame pivot axis and a frame outside, said method comprising:

• disconnecting said horizontal shock system from said standard swing arm;
• removing said standard swing arm;
• attaching a wide swing arm assembly to said frame outside, said wide swing arm assembly comprising two swing arms, a spanning bar and a frame pivot bolt, said two swing arms comprising a first swing arm and a second swing arm, said first swing arm and said second swing arm each having a frame end, each said frame end having an axis hole and a spanning bar attachment point, at least one said swing arm having an axle end, said spanning bar having a first end and a second end, said spanning bar said first end attached to said first swing arm said attachment point, said spanning bar said second end attached to said second swing arm said attachment point;
• and
• connecting said horizontal shock system to said spanning bar.