ProX connecting rods are made from the strongest alloys available on the market today and are made in Japan! OEM specifications and tolerances are meticulously maintained, ensuring easy installation and great performance. Sandblasting and polishing; The design of a connecting rod is very important to ensure durability and performance. They are sandblasted and polished to improve the surface texture. Sandblasting eliminates residual stress and smoothly bonds the forged surfaces. Lubrication system; They feature precise lubrication grooves to maximize lower connecting rod lubrication and extend roller cage life. Even in the most extreme conditions, the connecting rod will do its job. Mounting the connecting rod on the shaft and balancing the connecting rod requires specialized machinery and.