Welcome Kymco Owners!
I have been do the 20 mm carb for a few years now.works great.just plug and play lol
I was just browsing parts online and saw this 24mm intake.http://www.racingplanetusa.com/intake-manifold-with-insulator-spacer-24mm-carburetor-4stroke-p-2848-1.html?sessID=2642caa5d879b95abc6dce8485fff653#.U6IIE6U98nsThis got me wondering, are you supposed to replace your intake as well to match the larger 19 or 20mm carbs? What is that mm number referencing?