A Manx Norton, with a four valve head.
A race G50 Matchless.
The stars on a clear night. Sorry about this one, sounds a bit soppy, but I could stare at them for hours and never get bored, diamonds on velvet, etc, etc.
Going outside at night and hearing a bike in the distance having the tits thrashed off it, and thinking, go on sunshine give it some.
Seeing someone else wheelying their bike. Both big AND clever at the same time.
Working away the odd night, no wife, no kids, watch what I want on the telly, free beer, free food, free beer, now I know I mentioned beer twice but it was such a biggie, that I thought it was worth the repeat.
Seeing a bunch of guys on "fully loaded for camping" bikes and thinking, I wonder where they are going? Then usually, I wish I was going with them.
A white and red Yamaha 350N YPVS, 1986 for preference, just like the one I used to have, sob, sob.
There will be more when I think of them.