300' track racing is far different then dune or hill racing. For one, fast bikes are crazy light and riders are crazy light.. "Curves" basically mean jack shit if you ask me for track racing. As long as the motor revs and has good over rev and peek numbers are there, thats what wins races. That said im not saying there arent better pipes out there, but like jmadd said, all the fastest bikes(record holders) run shearers that ive seen at newtown.