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