4G63 EVO IX PROH2K CONNECTING RODS The ProH2K (formerly Sportsman) incorporates every feature of the premier ProH625 connecting rod...same material, same CNC programming, same pin oilers, same double ribbed cap, same everything...except the fasteners. The ProH2K utilizes the more economical, yet venerable ARP2000 rod bolts, rated to 220,000 p.s.i. The ProH2K is rated in excess of 175HP per cylinder and priced for the everyday performance enthusiast who isn't going to the moon.