The "Lightweight/Ultra Lightweight" class is represented by machinery of 125cc, 250cc and 400cc capacity. This class featured at the TT until 2004 but is now defunct and so, like the Newcomers' class, is extremely popular. 'Lightweight' refers to the 250cc 2-stroke machines whilst Ultra-Lightweight is the 125 2-strokes and 400cc 4-stroke bikes. This class is run as two separate races on Race Days (see below) but all the machines leave the start line in the same 'Session' (see below)The Manx Grand Prix Ultra Lightweight class lap record is still held by a Yamaha fzr 400. 109.86.mph Still held by Keith Taylor. This was before tuned mini twins were made eligible.