Cannondale Aficionados / Owners

Whether they call it Si or Hollowgram it's still confusing as fuck.

Here's the skinny.

Original BB30 crank, 144m Q:

Si [2001, silver, ltd edit. black, all discontinued]
SiSL [2007, black, discontinued]

New BB30/a crank 144mm Q (or 147mm if you believe a Cannondale doc, but I don't.)

SiSL2 [2013, black 109mm axle]
Si hollowforged [2013, black, hollow, 109mm axle]
Si forged [2016, black, forged non-hollow, 109mm axle]