Callies Ultra XD I Beam Rods for BBC. 6.700 Length, 2.2 Journal, 990 Pin
Callies is pleased to introduce the Ultra XD connecting rod. This unique patent pending configuration is designed for additional cam to rod clearance in long stroke racing engines. In most cases, the XD connecting rod will provide approximately .050″ more cam clearance than our conventional Ultras, and substantially more over many of our competitor’s connecting rods
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