Motion Pro stud installer tools which makes replacing the 8mm exhaust studs a doddle. 

Will work on other 8mm stud applications.

8mm thread Exhaust Studs x2 

The TTR studs are very exposed and prone to rusting solid resulting in them breaking or the thread stripping when removing their nuts. These long studs are the best replacements I have been able to find for the originals.

We sell a Motion Pro stud installer tool in the shop that makes replacing these studs a doddle.