Altis Sigma vs Caofen F80: which is bigger?
The Caofen F80 is the bigger bike. Its wheelbase is 0.6 in (15 mm) longer (51.2 in (1,300 mm) vs 50.6 in (1,285 mm)), it weighs 13 lb (6 kg) less.
With a 33.1 in (840 mm) seat, riders around 5'8" and up can get the balls of both feet down once suspension sag is counted, and riders around 6'1" and up can flat-foot it. On the Caofen F80, with a 33.1 in (840 mm) seat, riders around 5'8" and up can get the balls of both feet down once suspension sag is counted, and riders around 6'1" and up can flat-foot it.
Silhouettes are traced from manufacturer side-profile photos and scaled so the wheel-to-wheel distance matches the published wheelbase, so small parts like mirrors and fenders may be off by a few percent.
Questions
Is the Altis Sigma bigger than the Caofen F80?
No. The Caofen F80 has the longer wheelbase, 51.2 in (1,300 mm) vs 50.6 in (1,285 mm), and is 76.8 in (1,950 mm) long overall vs 78 in (1,980 mm) for the Altis Sigma.
Which has the lower seat height, the Altis Sigma or the Caofen F80?
Both list a 33.1 in (840 mm) seat height.
How tall do you need to be for the Altis Sigma vs the Caofen F80?
Roughly: the Altis Sigma suits riders from about 5'8" (balls of feet down) and the Caofen F80 from about 5'8". Shorter riders manage both with lowering links or a slimmer seat. Enter your height above to see yourself next to both.
Which is lighter, the Altis Sigma or the Caofen F80?
The Caofen F80: 172 lb (78 kg) vs 185 lb (84 kg) for the Altis Sigma. Manufacturers don't all weigh the same way, so treat small gaps as a wash.
Which is faster?
The Altis Sigma has the higher claimed top speed: 75 mph vs 53 mph.