Dual clutch transmission

A dual clutch transmission comprising:

• a first input shaft including a plurality of odd stage driving gears;
• a second input shaft disposed to have a concentric shaft with the first input shaft and including a plurality of even stage driving gears;
• an output shaft disposed to have a concentric shaft with the first input shaft;
• a counter shaft disposed parallel to the first input shaft, the second input shaft, and the output shaft to continuously transfer power to the output shaft and including odd stage driven gears engaged with the odd stage driving gears and even stage driven gears engaged with the even stage driving gears;
• a plurality of synchronous devices included in the first input shaft, the second input shaft, and the counter shaft;
• a plurality of shift forks coupled to the plurality of synchronous devices;
• and
• a shift rail provided to commonly guide a linear sliding of the plurality of shift forks,
• wherein the odd stage driving gears of the first input shaft and the even stage driving gears of the second input shaft are disposed on a straight line to be classified into an odd stage driving gear group and an even stage driving gear group,
• wherein a reverse driving gear is disposed between the odd stage driving gear group and the even stage driving gear group, and
• wherein the even stage driving gear group includes four driving gears, shift stages implemented by two driving gears which are adjacent to each other on a first side and a second side thereof among the four driving gears disposed in a line are disposed to have a difference of two stages, and intermediate two driving gears among the four driving gears are disposed to have a difference of a shift stage of four or more stages.