Q/R Steering Hub 6-Hole Sparco/Momo Str Wheels

The Mark Williams Q/R Steering Hub 6-Hole Quick Release for Sparco and Momo steering wheels is a precision-engineered hub assembly designed for drivers requiring rapid wheel detachment and secure mounting. This 6-bolt flange quick-release steering hub meets SFI 42.1 safety standards, delivering the reliability demanded in racing, high-performance driving, and emergency vehicle applications where equipment changeout speed matters. The aluminum construction with black anodized finish resists corrosion while maintaining a professional appearance in either competition or operational environments.

The 6-bolt flange pattern is the universal mounting interface for Sparco and Momo aftermarket steering wheels, enabling compatibility with a wide range of premium racing and motorsport wheels. SFI 42.1 certification confirms that this hub meets the Sports Car Club of America's safety standards for quick-release steering wheel assemblies—critical for vehicles subject to SCCA, NASA, or other sanctioning body regulations. The quick-release mechanism allows wheel removal without tools, reducing driver setup time during pit stops or vehicle transitions. Black anodized aluminum provides both aesthetic refinement and hard-surface corrosion resistance in demanding conditions. Weighing just 0.64 lbs, the assembly adds minimal unsprung mass to the steering column.

This hub is specified for drivers running modern motorsport equipment who need certified, field-proven quick-release technology. Track day enthusiasts, SCCA competitors, and professional racing programs depend on hubs that deliver positive engagement and rapid detachment without degradation over repeated cycles. The Mark Williams name carries weight in the racing community for steering components that survive high-cycle use. Buyers should verify that their specific Sparco or Momo wheel model is compatible with the 6-bolt pattern before purchase.