Bought bike with big bore already installed. Guy who sold me bike thought injectors were 6.4, but he knew very little about any details of the build. I got into bike first time since buying to install SE Extreme 64mm ported manifold and am looking at injectors. I see a 64137 stamped on injector, but cannot find a reference to that number anywhere.

Injector look a lot like SE 5.5 with red dot and o-ring, but I have seen other manufacturers injectors that look similar. Here is pic.

 

5.5 gps

 

Thanks - I saw some Feuling injectors that looked the same and numbers on injectors were very close, but the red dot looks to be a SE thing. Was hopi by they were bigger injectors, so I did not have to spend more money.