All Spool connecting rods come standard with ARP 2000 fasteners, ensuring high performance and reliability in demanding conditions. These connecting rods are meticulously crafted to provide superior strength and durability, incorporating several advanced manufacturing processes and quality control measures:

• High Tensile Strength 4340 Forged Steel: Made from premium 4340 forged steel, these connecting rods offer exceptional tensile strength, making them ideal for high-stress applications.
• Two-Piece Forging for Enhanced Durability: The two-piece forging process enhances the structural integrity and durability of the rods, ensuring they can withstand extreme pressures and loads.
• Hardness Rating of HRC36-42: With a hardness rating between HRC36 and HRC42, these connecting rods are engineered to resist wear and deformation, providing long-lasting performance.
• Dowelled Caps for Precise Alignment: Dowelled caps are used to ensure precise alignment during assembly, reducing the risk of misalignment and ensuring optimal performance and reliability.
• X-Ray and Sonic Testing for Structural Integrity: Each rod undergoes rigorous X-ray and sonic testing to detect any internal flaws or inconsistencies, ensuring only the highest quality components are used.
• Quenched and Heat Treated for Maximum Strength: The quenching and heat treatment process enhances the material properties, increasing strength and toughness to withstand high-stress environments.
• Shot Peening to Improve Fatigue Resistance: Shot peening is performed to introduce compressive stresses on the surface, significantly improving fatigue resistance and extending the service life of the rods.
• 100% Magnaflux Inspected to Detect Any Surface Cracks: Every connecting rod is 100% Magnaflux inspected, a magnetic particle inspection technique used to detect surface and near-surface defects, ensuring the highest level of quality control.
• Weight Matched Sets with a Tolerance of ±1 Gram: The connecting rods are weight matched to within ±1 gram per set, ensuring balanced performance and reducing vibrations during operation.
• Vacuum Degassed to Eliminate Impurities: The vacuum degassing process removes impurities and inclusions from the steel, resulting in a cleaner and stronger material that enhances the overall performance and reliability of the connecting rods.

By incorporating these meticulous manufacturing and testing processes, Spool connecting rods provide superior performance, reliability, and durability, making them the preferred choice for high-performance and racing applications.