A still further specific object of the present invention is to provide {HEAD ~ a vehicle body frame} which is light in weight and sufficient in {TAIL ~ strength} 
A still further specific object of the present invention is to provide { HEAD ~ a vehicle body frame } which is light in weight and sufficient in { TAIL ~ strength }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL