The Isle of Man TT is a fascinating event where a variety of motorcycles are used. Predominantly, these are high-performance bikes from manufacturers like Honda, BMW, Suzuki, and Yamaha, which have been specially modified for racing. Riders often use different bikes for different categories, such as Superbikes for the main event and Supersport or Lightweight bikes for others. It's also interesting to see the classic bikes in the Classic TT races. It's a thrilling spectacle of speed, skill, and engineering prowess.