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I read where his breakage occurred on an early twin. But I thought Triumph addressed this issue back in 2005 or 2006?



Triumph did try to address the issue by adding thin buttresses either side of the idler gear boss, but this wasn't very successful, as later year bikes with the buttresses still suffer boss breakage.

I believe if Triumph had made the boss with thicker walls and thicker buttresses, the problem would have been cured, but they didn't!

Mike (UK) _____________ 2008 Bonnie Black Special 2010 Speedmaster https://www.triumphtwinpower.com