Sitrak 6*4 tractor truck is the proven product, which features reliable structure, great loading capacity, excellent power from 351 - 450hp reliable performance. This model can meet the requirements of different road conditions. This model can satisfy your need of long distance highway transportation. sitrak is a world class truck brand with first class capabilities and top technology, you can rely on sitrak’s technical prowess and product quality. This tractor truck is mainly used to pull various semi-trailers.This tractor truck horse power is 351 - 450hp its transmission is 10 forwards and 2 reverse. Its model is WD615.69, water-cooled，four strokes，6 cylinders in line with water cooling, electric injection. We pay more attention to the detail of each truck.Our goal is to provide customers with quality and cheap price truck.Please check the detail of our truck as follow.We are direct seller, all the pictures are shot from physical product.