Callies Connecting Rod Bolt – 7/16″ Bolt – 1.600″ Long – 12 Point Head – ARP2000Callies Ultra Rods

Product Descripton:

Callies Performance Products began manufacturing high performance crankshafts in 1989. With many years of engineering and employee experience, Callies has grown to be the industry leader for innovative product design. Callies Performance Products takes pride in staying ahead of the competition with the latest high tech design and manufacturing advantages. By utilizing the latest in computer aided solid modeling and CNC machining centers, Callies is able to offer the best designed, highest quality crankshafts available on the market today.