I'll go with SportHead since it was derived from the HP2.
2006 Red R1200RT
There's a slick cutaway diagram of the DOHC engine here:
If someone knows of a BMW link on this engine design please post it. Thx.
Overhead Camhead = O Head
Tour of Honor Missouri State Sponsor
12 K1600GTL 07 R1200RT
Camheads was also my idea.
Short and it fits with the previous engine names.
BMW MOA # 71371
Tm Pterodactyl MT Outpost
My first thought was "Diamond Head"
How about HiPer Head (or Hyper Head)?