Trojan Hub Blank 190mm Diameter 6x5.5 Bolt Pattern

Designed for professional wheel builders, restorers, and fabrication shops, this Trojan hub blank delivers a precise, reliable foundation for custom wheel hubs. With a 190 mm diameter and a 6-on-5.5 inch bolt pattern, it provides the sturdy base you need to achieve accurate bore alignment, concentricity, and repeatable results across multiple builds.

Why this hub blank stands out

• Accurate foundation for customization: The 190 mm diameter provides ample material for precise drilling and finishing of stud holes, reducing runout and ensuring a true mounting surface on every hub.
• 6x5.5 inch bolt pattern: Tailored for applications and restorations that use this circle, enabling you to match exact hub geometry without compromising alignment. (6x5.5" bolt pattern is commonly referred to as 6x139.7mm.)
• Professional-grade precision: Engineered for repeatability, so whether you're duplicating a stock pattern or fabricating a custom hub, you get consistent results each time. (6x5.5" bolt pattern is also described in bolt pattern guides that emphasize the need for precise alignment.)
• Versatile on-site or in shop: Ideal for fabrication shops or field work where engineers and wheel builders need a reliable starting point to drill, fixtures, and assemble with confidence.
• Trusted Trojan brand: Built on Trojan’s heritage of hub components, designed to withstand rigorous use in demanding projects.

Ideal use cases

• Restoration projects for classics or niche vehicles requiring a 6x5.5" bolt pattern
• Custom wheel builds where you need to drill your own stud hole pattern with precise alignment
• Fabrication shop workflows that demand repeatable hub bases for multiple builds
• On-site customization jobs where a solid, unmodified starting point accelerates setup and accuracy

Practical guidance for best results

• Ensure proper fixturing and alignment when drilling stud holes to maintain concentricity and minimize runout.
• Inspect the finished hub surface for burrs or sharp edges after drilling, and deburr as needed before mounting wheels.
• Store in a dry, clean environment to preserve surface integrity and prevent corrosion prior to installation.
• Use compatible tooling and jigs designed for hub blank machining to maximize accuracy and repeatability across builds.

Specifications snapshot

• Hub diameter: 190 mm
• Bolt pattern: 6 on 5.5 inches
• Product code: T995055
• Brand: Trojan

Whether you’re retrofitting a vintage wheel, modeling a high-performance build, or equipping a professional workshop, this Trojan hub blank is a dependable, precise starting point for high-quality wheel hubs. Its robust 190 mm diameter and 6x5.5" bolt pattern are designed to deliver repeatable bore alignment, true concentricity, and streamlined workflows for multiple projects.