yes helix pro with lockout, used to have one fitted to my jmc era stumpy fsr…
£200+ when new
this is from my fading memory… its coil with air assist rather than some kind of air 'platform' which was used to change how progressive the shock was…
rebound damping control only. to run the lockout I used an old xc pro thumbie…
I'll have a look through the pile of cr'p in the garage attic as i might have a manual (during the last clearout I found a prostop disk brake fitted to a pair of answer accutrak fork so who knows whats lurking there…)