The fastest time recorded by a rider in an Isle of Man TT Superbike TT race (6 laps) is 1:46.07.16 by John McGuinness (UK) on a 1000 HM Plant Honda on 8 June 2009.

See: http://www.iomtoday.co.im/sport/isle-of-man-sport/superbike_mcguinness_secures_15th_tt_victory_1_1792910