Smart carb 2. 36mm part #36BAK. Used for 1 season on my 2019 ktm 300xc works perfectly. Comes with owners manual, and set up Guide. This is not a lectron it is a smart carb. There was no brand listing for smart carb so I had to pick lectron. Comes with cut out intake boot for 2019 ktm 300 models. May fit others ,check fitment to see if boot will work.