King Pin Cap Long

The King Pin Cap Long from Diversified Machine is a precision-engineered aluminum component designed for sprint car front spindle assemblies. This fastener secures the king pin assembly on DMI sprint front spindles, playing a critical role in maintaining steering geometry and suspension alignment under extreme racing conditions. If you're building or maintaining a high-performance sprint car, the king pin cap long is an essential component that ensures reliable steering response and consistent handling lap after lap.

Machined from durable aluminum in a natural finish, this king pin cap features a 5/8-18 inch thread specification that provides a secure, vibration-resistant connection to your sprint front spindle assembly. The long-version design accommodates deeper spindle configurations and delivers superior load distribution across the king pin joint, reducing stress concentration during hard cornering and acceleration. Aluminum construction keeps rotating mass to a minimum—critical for sprint car performance—while maintaining the rigidity required for precision steering inputs. The compact 2.05 x 1.3 x 3.75 inch profile integrates seamlessly into tight front-end packaging without interference.

Sprint car teams and experienced shade-tree mechanics benefit most from this king pin cap long when upgrading or rebuilding DMI sprint front spindle systems. Installation requires torque specifications appropriate to aluminum-to-steel fastener standards—verify your spindle manufacturer's torque chart before final assembly. This is a direct-fit component for Diversified Machine sprint spindles; verify your spindle model and king pin diameter before ordering. Regular inspection during maintenance intervals ensures the cap remains tight and prevents premature wear in the steering linkage.