Dirt, which comes from English Dirt Jumping (Dirt, which means earth, the surface on which this sport takes place), is a spectacular discipline that comes from BMX. It involves performing figures in the air, each with a name (Tailwop, Superman, Flair, 360 °, Backflip, etc.). The Dirters’ playing field is a field of earth bumps created from scratch with ramps and modules. Dirt is also practiced in town on artificial structures such as skate parks; this is called Street 3win2u.
In competition, a course is imposed, and the figures are scored by a jury on the difficulty, technique, height, fluidity, and style, http://www.3win22.com/my/en-us/.
It is a very visual sport which makes it possible to make the show and to attract the spectators. There are several competitions in the world; the best-known championship is the FMBWT (Freeride Mountain Bike World Tour), where the best athletes of the discipline meet.
THE SPECIAL FEATURES OF A DIRT MTB
The Dirt MTB is a small compact (26 inches) MTB with a semi-rigid frame with low sloping, i.e., the upper tube descends low enough so that the saddle is not too high and leaves on the dirter the possibility of carrying out the figures easily. It must be solid and equipped with a front suspension with a small clearance (100 mm) to absorb shocks. Dirt is a risky practice with jumps that can go up to several meters high; the choice of the frame is, therefore important, it must be well adapted to avoid putting yourself in danger.
The Dirt MTB has a small handlebar for ease of handling, a single chainring like on BMX, and a single brake to slow down if necessary. They will have a brake sheath long enough for the pilot to perform tricks by turning the handlebars several times.
EQUIPMENT IS ESSENTIAL
The most important element of the equipment: the helmet. It will serve to protect your head in the event of a fall; there is the bowl helmet or the full-face helmet, both types are common among the dirters, knowing that the full-face helmet is the one that will protect you the best. Whether you are a beginner or confirmed, you will need to include in your equipment various protections: knee pads, elbow pads, and a back protector.
You can’t improvise overnight, and it is strongly recommended to start on terrain with small bumps to acquire the technique, which will then allow you to progress to larger jumps.