The New Balance SD400 is a high performance sprint spike geared for elite-level athletes. It is ideal for events up to 400m.


Important Shipping Note: U.S. sales only.


Attack the track with the New Balance SD400. This elite-level sprint spike features an aggressive, full-length 8-pin plate for relentless traction and optimal power transfer. A synthetic upper securely holds your foot in place for performance in events up to 400m.

Model Number:

Weight: 4.5 oz (size 8)

Available Widths: B=Medium

How It Fits (based on width B)

  • Sizing: Standard running shoe length
  • Heel: Medium
  • Midfoot: Medium to narrow
  • Forefoot: Narrow
  • Toebox Height: Low
  • Shoe Shape: Curved


The SD400 is a lightweight sprint spike designed for distances up to 400m.


  • To keep weight low, this shoe contains no additional cushioning technologies.


  • Internal Shank is a thermoplastic unit in the midsole that provides torsional rigidity.


  • Synthetic Upper provides a close fit for optimal security and performance.


  • High Response TPU Plate provides lightweight traction on the track as well as torsional rigidity for performance.
  • Contains 8 spike receptacles per shoe.


  • RL-2 is a distance racing-specific last with a narrow heel, a standard forefoot width, and a standard toe-box height.

Footwear Performance Characteristics

Pronation Control: What's This?

  • Neutral
    • Min
    • Mod
  • Support
    • Min
    • Mod
    • Max
  • Motion Control
    • Mod
    • Max

Heel-Toe Offset (mm): What's This?

  • 0
  • 1-2
  • 3-4
  • 5-6
  • 7-8
  • 9-10
  • 11+

Stack Height:

  • Barefoot
  • Minimal
  • Low
  • Medium
  • High
  • Maximal


  • Road
  • Road-Trail
  • Hard Trail
  • Varied Trail
  • Soft Trail

Shoe Type:

  • Premium
  • Standard
  • Performance
  • Racing

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