A seat rail extending rearwardly from a vehicle body frame to support a seat.
The
seat rail is formed of a left-and-right two-split cast product having a substantially
flat upper surface and, at the same time, includes cross members. These cross members
can be mounted later using bolts. The seat can be arranged above the seat rail
and the cross members and, at the same time, a seat engaging member which engages
the seat with the cross member can be formed on the cross member. The seat rail
is constituted of the left and right seat rails which are divided with respect
to a vehicle width center. This seat rail structure provides for simple manufacture
and assembly.
