All YOUFU rods forging is made of air space high-quality 40CrNiMoA Alloy Steel(American SAE 4340) for all high performance racing rods. The rod itself and cap have been stamped and forged separately which ensures the fiber direction of metal structures conformable to the stress direction during the movement of the connecting rod and and this kind of treatment ensures the strenfurther maintain the strength of the rod. Auto Controlled Continuous Furnace is employed for heat treatment gth inside and outside the torging stay the same and also improves the mechanical property significantly.