Mk1 Penumbra

A 55x55mm bimetal evolution of the Umbra.

250 total produced. Released April 1st, 2026.

  • 55mm wide
  • 55mm diameter
  • 64.0 grams
  • 7068 aluminum body
  • Stainless steel rims
  • 10mm axle
  • Size C bearing
  • 19mm response pads