All Turn Key Karts are professionally built and can be customized. Feel free to browse each model below to review the starting price. The most common upgrades are Seats, Motor Mounts, Clutches, and Radiators when it pertains. The most common add-on is a Data Gauge like the My Chron or Alfano which can be professionally installed for you. If you would like to upgrade any item on the kart please feel free to add this to your checkout notes are give us a call and we can provide you a quotation.