"The FE2 is an upgraded version of the original electronic Nikon FE (1978-1984). It was first released back in 1983. The mechanical original FM2 was launched a year ahead of the FE2 in 1982. It created a lot of attention as the general expectation of breaking the speed barrier of 1/4000 sec was eventually materialized with the original FM2. The camera, benefited from the newly designed Nikon titanium honeycomb pattern shutter with a shorter vertical shutter curtain travelling time, and also provided a higher maximum sync speed of 1/200 sec. - the highest sync speed available in a commercially produced SLR camera body during the early part of the '80s. However, with a newly revised shutter mechanism, the FE2 featured an improved sync speed of 1/250 sec, which was the world's fastest sync speed SLR then in 1983. The original FM2, was eventually upgraded with a newer shutter with similar performance, it was renamed the FM2n or called New FM2 in Japan."
resource: mir.com.my/rb/photography/hardwares/classics/nikonfeseries/fe2/