Editing Isle of Man TT (section)

====Superstock TT====
{{main|Superstock TT}}
The 2015 specifications for entries for the [[Superstock TT]], an event for production based motorcycles racing with treaded road tyres, are based on the FIM Superstock Championship specifications, as follows:
* Superstock TT: (Machines complying with the [[2012 FIM Superstock 1000 Championship season|2012 FIM Superstock Championship]] specifications)
** Over 750&nbsp;cc up to 1000&nbsp;cc 4 cylinders 4-stroke
** Over 750&nbsp;cc up to 1000&nbsp;cc 3 cylinders 4-stroke
** Over 850&nbsp;cc up to 1200&nbsp;cc 2 cylinders 4-stroke
Minimum (Dry) Weight 170&nbsp;kg<ref>''International Tourist Trophy Regulations 2015'' page 5/Appendix D page 34 ACU Events (Isle of Man) Limited (2015) Isle of Man Department of Economic Development</ref>

'''Supertwin TT'''

2022 saw the introduction of the supertwin race run over 3 laps on Wednesday the 8th of June, increased to 4 laps the following year. The class is very similar to the lightweight class which last ran in 2019, although with some differences. The maximum capacity has been increased to 700cc allowing the Yamaha YZF-R7 and Aprilia RS660 to compete. In 2022 bikes with capacities of 651cc+ were required to run 10&nbsp;kg heavier than the 150&nbsp;kg limit for the 650cc machines, but 2023 saw this changed and all bikes in the class now have a minimum weight of 150&nbsp;kg.<ref>{{Cite web |title=Technical Director Dave Hagen explains the Technical Tweaks for the 2023 Isle of Man TT Races |url=https://www.iomttraces.com/latest/features/tech-tweaks-for-tt-2023/ |access-date=2023-06-11 |website=www.iomttraces.com |language=en}}</ref>