Brand New Argon 18 Electron Pro Track Carbon Fiber Frameset, Size Large. Brand New Argon 18 Electron Pro Track Carbon Fiber Frameset. RadicalVelo is an authorized dealer of Argon 18 Bikes. This is a top of the line track frameset developed for the Rio Olympics. The matching pursuit track bars are available on special order. Radicalvelo LLC has used its best efforts to inspect the item(s) for sale and create descriptions and furnish photographs that fairly and adequately depict the type, condition and image of the goods at the time of sale. This Listing Powered By. The item “Brand New Argon 18 Electron Pro Track Carbon Fiber Frameset, Size Large” is in sale since Monday, February 6, 2017. This item is in the category “Sporting Goods\Cycling\Bicycle Frames”. The seller is “radicalvelo” and is located in Englewood, New Jersey. This item can be shipped worldwide.