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Harbinger YoYo - Mk1 x Spinworthy

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Harbinger YoYo, by Mk1 YoYos and Spinworthy

The Harbinger YoYo, a collaboration between Mk1 and Spinworthy, is a modern aluminum performance yoyo that features classic tug-responsive play. Based on Spinworthy's classic wooden Harbinger model, the metal Harbinger is optimized for long spins, string tricks, and offers smooth and reliable response.

Elevate your yoyo game with the expertly designed and crafted Harbinger yoyo.


  • Weight: 47.5  grams
  • Diameter: 58.5 mm
  • Width: 32.8 mm
  • Material: 6061 Aluminum
  • Bearing: MR85 5x8x2.5mm
  • Response: RBC pads
  • Axle:  12mm M4
  • Return type: Responsive
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