Converting a lui 50 to lui 75 specification - with dyno testing of Casa's 80 cc and CP's ONE05 kits

The Lui series isn’t just groundbreaking in design — it’s also a lot of fun to ride. At least, as long as the engine has been upgraded. The original 50cc engine, with 1.5 hp at the crankshaft and a top speed of only 38.5 km/h / 24 mph, is a bit of a pain.

Compared to the Lui 50, the 75cc models are a much more mature affair. The large headlamp with high/low beam, a taillight, and other features give it a more grown-up look. And it rides like one too.

Thanks to the hype and excitement around the Lui series — likely sparked by the first Lui Dolomiti Experience — the parts and tuning situation is better than ever. You can easily upgrade your 50 model to 75 specs.

For more details, here’s the model history of both versions:

Model History

We’ve created a wishlist with the key parts needed for the conversion:

Wishlist

DYNO TEST

We put it on the dyno using the original SH20 carburetor, air filter box, and stock Lui 75 exhaust.

And on the dyno with the later configuration, it looked like this:

ONE05 Casa Performance Cylinder Kit