Chevy LS1

Callies Ultra I Beam Rods for, LS1. 6.35 Length, 2.1 Journal

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Ultra connecting rods are made entirely in the U.S.A. Every Ultra connecting rod is produced from specially formulated Timken 4330M steel. This material is then precision forged in Michigan and fully machined in our Fostoria, Ohio facility. Callies Ultra I Beam Rods for, LS1. 6.35 Length, 2.1 Journal