I agree with Dave . . . as you are screaming into a corner full on the brakes in traffic on the track, you don't need to be focusing on a guage indicator somewhere down by the speedo worrying about what gear you might or might not be in, there are a few other more important things to be concerned with.no you do not need it on the track,. if you do ., you should not be on the track,., and should always know what gear you are in on the track at any given time.,
this would be a crutch and means you are riding above your head on the track if you do not know what gear you are in ?!!!!!!