The differences are mostly cosmetic with these "functional" exceptions:
-Full Throttle has a different exhaust (that also sounds different)
-Full Throttle has lower bars
-There are 3 different seats between the 4 bikes, varying in shape and finish
-Classic has a full rear fender (protects better from rear wheel spray)
-Spoked wheels on Classic and Urban Enduro run tubes and are heavier than cast wheels w/tubeless tires on Icon and Full Throttle
-Urban Enduro comes standard with headlight grille (may protect against debris as headlight lens in glass)
-Full Throttle has a different exhaust (that also sounds different)
-Full Throttle has lower bars
-There are 3 different seats between the 4 bikes, varying in shape and finish
-Classic has a full rear fender (protects better from rear wheel spray)
-Spoked wheels on Classic and Urban Enduro run tubes and are heavier than cast wheels w/tubeless tires on Icon and Full Throttle
-Urban Enduro comes standard with headlight grille (may protect against debris as headlight lens in glass)