To repair or replace only a lower body by detachably mounting an upper body and the lower body of a front spoiler.

A front spoiler 1 is formed of material such as glass fiber reinforced plastic, urethane or polypropylene lightweight with high hardness and easy to machine, and bisected in an upper body 2 and a lower body 3 along a horizontal parting line. It is preferable to set the parting line into the same position as a skirt panel bottom part at the front of a vehicle. Joint faces 4 are formed at the connection parts of the upper body 2 and lower body 3, and the joint faces 4 are mutually clamped in U-shape by connectors 8. Insert holes 5 are bored in suitable parts of the joint faces 4, and the upper body 2 and lower body 3 are detachably mounted by bolts 6 and nuts 7. In the case of the lower body 3 being deformed or damaged, only the lower body 3 can be easily repaired or replaced.