{HEAD ~ A vehicle body frame} 1, wherein {TAIL ~ said head pipe} is formed at its tubular main body portion with an opening 
wherein
{ HEAD ~ A vehicle body frame } 1 , wherein { TAIL ~ said head pipe } is formed at its tubular main body portion with an opening
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH