The Lightweight TT is a motorcycle road race that is a part of the Isle of Man TT festival; an annual motor-cycle event at the end of May and beginning of June. Between 1949 and 1976, the Lightweight TT Race was part of the Grand Prix motorcycle racing season. The event was dropped from the 2005 Isle of Man TT Race calendar due to lack of entries. The Lightweight TT and the Ultra-Lightweight TT were later reinstated to the 2008 & 2009 race schedule and held on the 4.25 mile Billown Circuit in the Isle of Man. For the 2010 Isle of Man TT the Lightweight TT was again dropped from the race schedule on cost grounds. The event was reintroduced for the 2012 Isle of Man TT Races for water-cooled four-stroke twin cylinder not exceeding a capacity of 650cc and complying with the ACU Standing Regulations.
Read more about Lightweight TT: Engine Capacity, Speed and Lap Records, Lightweight TT Race Winners