King Pin

The King Pin 5/8-18 in Thread from Winters is a precision spindle fastener engineered for front-end suspension assemblies on sprint cars and high-performance race vehicles. This steel component serves as the critical pivot point connecting the spindle to the steering knuckle, bearing vertical loads and supporting precise wheel alignment during competition. Racers and fabricators rely on this part to maintain structural integrity and predictable handling characteristics through demanding track conditions.

Manufactured from durable steel, the King Pin features a 5/8-inch diameter with 18 threads per inch (TPI) specification, delivering robust clamping force and resistance to vibration loosening during high-speed cornering and acceleration. The 7.55-inch overall length accommodates Winters sprint front spindle geometry, while the compact 2.25 x 1.3-inch cross-section ensures minimal clearance interference within tight suspension packaging. Steel construction provides superior shear strength compared to alternative materials, critical for handling the lateral and vertical forces generated in competitive driving.

This king pin is designed specifically for compatibility with Winters Sprint front spindles (MPN 6476-02), making it the direct replacement or original equipment choice for racers maintaining or rebuilding sprint car suspension systems. Installation requires proper torque specifications and alignment procedures to ensure safe operation. Professionals and weekend competitors alike benefit from the precision tolerances and proven performance track record, particularly in short-track racing environments where suspension reliability directly impacts competitive success and driver safety.