There were a several iterations of the S30. Technically the Silvio and S30 versions could be taken apart and packed into airline luggage (barely). Here are the differences that I can think of:
Silvio 1: (the original performance Cruzbike)
-welded frame
-straight road components
-straight front triangle
-dual suspension
Silvio is the first Performance Cruzbike: Splits into Silvio as Road/touring machine and Vendetta as Race specific
Silvio 2 & 2.1:
-hydroformed frame
-curved front boom
-evolved into S30
In between somewhere people started occasionally calling some of them Silvio 3, or often called Silvio S30 in error - see
@Robert Holler 's message several posts below machines that still had the same Silvio 2 features:
-27 degree seat angle
-dual suspension (air head-shock thing and rear elastomer) - some swear it was great, some say gimmicky, some say never really worked - probably depends on the person, setup, type of roads you ride, etc.
S30 (has suspension/geometry changes):
-only sold for a short while
-basically same as original except no front shock, 33 degree seat angle, and different head angle
-slightly different paint scheme
-some say short wheel base good for maneuverability, some found head position hard on balance and short wheel base a little harsher
S40.1:
-no active suspension
-larger tire clearance and larger tires came stock
-rear triangle is welded frame triangle similar to "regular" bike
-wheel base lengthened significantly - improves stability (think loaded touring and straight line no hands)
-adds many attachment points for racks, fenders, etc. that were not on S30
S40.2 (current):
-1x drivetrain
-even more tire clearance and larger tires - up to gravel bike sizes??
S40.3 (Next generation - Hoping for a near future unveiling)
I think I have most of it right. Let me know of any errors so I can correct them. (Corrections made --Thank you
@Robert Holler)