Wheel Center for Micro Sprint

Precision engineering meets relentless performance in our dedicated Wheel Center for Micro Sprint applications. This critical component is the heart of your wheel assembly, directly influencing handling, power transfer, and overall safety on the track. Unlike standard hubs, our design is optimized for the high-torque, high-stress environment of micro sprint racing, where every fraction of a second counts. It serves as the robust interface between your axle, brake rotor, and wheel, ensuring that the driver's input is transmitted flawlessly to the track surface. For racers seeking the ultimate connection, pairing this with our high-strength Wheel Hub assemblies provides a complete and reliable solution. Specifically engineered for driven axles, our performance-oriented Spline Rear Wheel Hub ensures maximum torque transfer without slippage, a common failure point under extreme load. When building or maintaining a competitive micro sprint car, the correct Sprint Car Rear Wheel Hub is non-negotiable for durability. Furthermore, for teams utilizing traditional wire wheels, our precision-machined Spoke Hub offers the perfect balance of lightweight construction and torsional rigidity.


The Wheel Center for Micro Sprint is manufactured from premium 4140 chromoly steel, heat-treated to a specific Rockwell hardness to achieve an optimal balance between toughness and machinability. This process significantly enhances fatigue resistance, preventing cracks and deformation under cyclic loading during races. Each unit undergoes ultrasonic testing for internal flaws and is magnafluxed to detect surface cracks, guaranteeing structural integrity before it ever reaches your shop. The hub features a meticulously machined pilot bore and stud pattern, ensuring a perfect, vibration-free fit with your specific axle and wheel combination. A key design focus is on weight reduction without compromising strength; strategic material removal in non-critical areas lowers rotational mass, improving acceleration and brake response. The sealing surfaces are finished to a high tolerance to work seamlessly with modern, low-friction bearing seals, protecting the internal bearings from track debris and contaminants. This attention to detail in the Wheel Center for Micro Sprint translates directly to consistent lap times and reduced maintenance intervals over a grueling race season.

Technical Specifications & Dimensions

  • Material: 4140 Chromoly Steel, Heat Treated
  • Process: CNC Machined from Solid Billet
  • Surface Treatment: Black Oxide or Cadmium Plating (Optional)
  • Quality Control: 100% Ultrasonic & Magnaflux Inspection
  • Compatibility: Designed for Common Micro Sprint Axle Diameters
  • Weight: Optimized for Minimum Rotational Mass
Model Number Bolt Circle (inches) Pilot Diameter (inches) Wheel Stud Size Overall Width (inches)
MS-HUB-5x4.75 5 x 4.75 2.850 1/2"-20 RH 3.125
MS-HUB-5x5.00 5 x 5.00 2.850 1/2"-20 RH 3.125
MS-HUB-8x165.1 8 x 165.1 (Metric) 72.5mm M12 x 1.5 80mm
MS-HUB-SPLINE N/A (Spline Drive) Custom per Axle N/A Custom

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