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  • Ultra XD Image
  • Ultra XD

  • 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 Small Block Chevy 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.

    To learn more, watch the video – then contact one of the awesome members of our sales staff.

  • Ultra XD

    Standard Features

    • Provides approximately .050″ more cam clearance than conventional Ultras
    • designed for additional cam to rod clearance in long stroke Small Block Chevy racing engines
  • Below is only a partial listing of part numbers. Please call for additional part number information and availability.

    Big Block Ultra XD I-Beam  
    Description   Typical Wt. Part #
    6.700   2.200 825g U18114
    Single BBC XD I-Beam      
             
    Big Block Ultra XD H-Beam  
    Description   Typical Wt. Part #
    6.700   2.200 823g U19114
    Single BBC XD H-Beam      
             
    Small Block XD I-Beam    
    Description   Typical Wt. Part #
    5.850   2.100 648g U18130
    6.000   2.100 656g U18135
    Single SBC XD I-Beam      
             
    Small Block Ultra XD H-Beam  
    Description   Typical Wt. Part #
    6.000   2.100 647g U19135
    Single SBC XD H-Beam      
             
    LS Ultra XD I-Beam  
    Description   Typical Wt. Part #
    6.125   2.100 667g U18170
    Single LS XD I-Beam      
  • « Back to Catalog
  • Ultra XD Image
  • Ultra XD

  • 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 Small Block Chevy 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.

    To learn more, watch the video – then contact one of the awesome members of our sales staff.

  • Ultra XD

    Standard Features

    • Provides approximately .050″ more cam clearance than conventional Ultras
    • designed for additional cam to rod clearance in long stroke Small Block Chevy racing engines
  • Below is only a partial listing of part numbers. Please call for additional part number information and availability.

    Big Block Ultra XD I-Beam  
    Description   Typical Wt. Part #
    6.700   2.200 825g U18114
    Single BBC XD I-Beam      
             
    Big Block Ultra XD H-Beam  
    Description   Typical Wt. Part #
    6.700   2.200 823g U19114
    Single BBC XD H-Beam      
             
    Small Block XD I-Beam    
    Description   Typical Wt. Part #
    5.850   2.100 648g U18130
    6.000   2.100 656g U18135
    Single SBC XD I-Beam      
             
    Small Block Ultra XD H-Beam  
    Description   Typical Wt. Part #
    6.000   2.100 647g U19135
    Single SBC XD H-Beam      
             
    LS Ultra XD I-Beam  
    Description   Typical Wt. Part #
    6.125   2.100 667g U18170
    Single LS XD I-Beam      
  • « Back to Catalog

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