The Racer has for many years been the benchmark of the Tony Kart range of frames. Since 2000, the various editions of this model have collected 7 world titles and several other international titles in all categories. The new 401R fits into this success story, further improving some features, especially in terms of components. Among the most important innovations, the new "hi grip" steering wheel with inclined hub, the integral platform and the new M7 number plate spoiler supplied as standard. Also new graphics stickers.
On the other hand, the structure and geometry of the frame remain unchanged. Just as the cornerstones of philosophy at the base of the project do not change: high quality materials, technologically advanced processes, constant development carried out on the basis of the information gathered by the Tony Kart Racing Team on the most important race fields in the world.

The Racer 401R is equipped, for the single-speed categories, with the BSD braking system, already mounted with excellent results on the previous model 401S. The rear brake caliper is forged in one piece: inside it work two pistons of Ø 34.5 mm, with stroke recovery, combined with evolution brake hoses and DOT 5.1 oil. The material of calipers and brake pumps is Ergal, chosen for its particular mechanical resistance properties. The resistance is also increased by the hard oxidation process in thickness, which serves to minimize the wear and tear of moving components. All the latest technical features have been developed and tested by the official Tony Kart racing team on the most important races and races in the world.