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 Big Block and 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.
Below is only a partial listing of part numbers. Please call for additional part number information and availability. Typical weights may vary between sets.
| Big Block Ultra Enforcer XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.700 | 2.200 | U18214 | ||
| Big Block Ultra XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.700 | 2.200 | 825g | U18114 | |
| Big Block Ultra XD H-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.700 | 2.200 | 823g | U19114 | |
| Small Block Ultra Enforcer XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.000 | 2.100 | U18235 | ||
| Small Block Ultra XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 5.850 | 2.100 | 648g | U18130 | |
| 6.000 | 2.100 | 656g | U18135 | |
| Small Block Ultra XD H-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.000 | 2.100 | 647g | U19135 | |
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 Big Block and 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.
Below is only a partial listing of part numbers. Please call for additional part number information and availability. Typical weights may vary between sets.
| Big Block Ultra Enforcer XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.700 | 2.200 | U18214 | ||
| Big Block Ultra XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.700 | 2.200 | 825g | U18114 | |
| Big Block Ultra XD H-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.700 | 2.200 | 823g | U19114 | |
| Small Block Ultra Enforcer XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.000 | 2.100 | U18235 | ||
| Small Block Ultra XD I-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 5.850 | 2.100 | 648g | U18130 | |
| 6.000 | 2.100 | 656g | U18135 | |
| Small Block Ultra XD H-Beam | ||||
| Description | Typical Wt. | Part # | ||
| 6.000 | 2.100 | 647g | U19135 | |