Also, the head pipe is formed at its front surface or its both sides of its tubular main body portion with {TAIL ~ an opening} in {HEAD ~ order} to reduce the weight 
Also , the head pipe is formed at its front surface or its both sides of its tubular main body portion with { TAIL ~ an opening } in { HEAD ~ order } to reduce the weight
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH