Frame part, seat frame for motorcycle, and motorcycle

Abstract

A magnesium alloy frame part for use in a seat frame of a motorcycle includes a seat mounting section arranged to mount a seat thereon, the seat mounting section extending along a vehicle length direction; a first side wall section extending from the seat mounting section; a second side wall section extending from the seat mounting section and being located on the outer side, along a vehicle width direction, of the first side wall section; and a plurality of protrusions provided at at least one of a boundary between the seat mounting section and the first side wall section and a boundary between the seat mounting section and the second side wall section. The seat mounting section has a thickness greater than at least one of a thickness of the first side wall section and a thickness of the second side wall section.

Dependencies are inferred from the claim text.