Welcome...The tach and clock are often Triumph Accessories available from the dealers or other places...other good sites are:
Fast Eddy Sports
BellaCorse.com
NewSpeedmaster.com
British Customs
Joker Machine
Low Brow Customs
That certainly is not all that is out there, but... well now you know where I shop.

~Brent ----- "Nothing you can be is more terrible than what I am." ~ 2007 Black Speedmaster!!