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Any orders placed after this date will be processed when we reopen on
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th May.


Stainless Steel Head Race Kit

Upgrade your classic British motorcycle with this premium CNC-machined stainless steel replacement head race kit. This precision-made upgrade over the original mild-steel items offers superior strength and greatly improved corrosion resistance.


Kit Contents:

  • 40 × 01-4675 – 1/4" Hardened Stainless steel ball bearings (20 top, 20 bottom)
  • 1 × 65-5126 – Stainless Head race cone (upper)
  • 1 × 65-5127 – Stainless Head race cone (lower)
  • 2 × 66-4149 – Stainless Head race cups (top and bottom)

Key Features:

  • Material: Stainless steel
  • Dimensions: Please see individual item listings for approximate measurements.
  • Note: All components are precision-machined for a direct fit. Please verify compatibility with your model before ordering.

    Compatibility: This head race set-up was originally fitted to a wide range of BSA models with telescopic forks including:

    A7, A10, A50 (OIF), A65 (OIF), B31, B33 and M-group models with telescopic forks.

    It may also fit other models — please confirm using the part number and dimensions.


    Proudly produced in Cornwall, England by CPC Engineering using precise CNC manufacturing techniques for consistent quality and performance.

    66-4149 - Head Race Kit

    • Brand: CPC Engineering
    • Product Code: 66-4149 - Head Race Kit
    • Availability: In Stock
    • £60.00

    • Ex Tax: £50.00

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