Callies: Ultra Billet Connecting Rods 6.125" [LS LSX LT Engines] performance fuel 900‰Û_ base circle with a

900‰Û_ base circle with a 4

570" exhaust valve

lug pattern

Concave Series:åÊFor enthusiasts that require aesthetics with three dimensional contours and details

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Callies: Ultra Billet Connecting Rods 6.125" [LS LSX LT Engines] performance fuel 900‰Û_ base circle with aCallies Ultra connecting rods are produced from extremely clean Timken steel that is formulated to our exact specifications. This proprietary steel is forged in Trenton, Michigan, and manufactured 100% in our Fostoria, Ohio facility. Pride in workmanship, and attention to detail are qualities youll discover during careful examination of our finished product. Each step of the manufacturing history of every Ultra rod is meticulously maintained by our