he ProH625+ rod from BC is the premier industry connecting rod. Made from aerospace grade 4340 steel, the ProH625+ utilizes every strength and benefit feature ever assembled in a connecting rod design. Incorporating ARP's ultimate fastener, the Custom Age 625+, rated to 280,000 p.s.i., the ProH625+ delivers the ultimate clamping ability at high horsepower and rpm. This rod is intended for the true hardcore enthusiast and racer and is rated in excess of 250+HP per cylinder.