Durable, wear-resistant piston head for gearboxes 2 and 3 versions. It is made on CNC machines. The head is equipped with one O-ring and a thrust bearing.   

The geometry is optimized for correct operation with milled gearboxes. The increased length of the piston head makes it easier to set the angle of capture of the piston. The engraving spacer reduces the probability of untwisting the head.   

The length of the landing screw has been increased. It has 8 radially positioned holes for optimal operation of the cylinder piston group.