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Lumen Frame + Fork

Retro-reflective frameset
Mission Bicycle is currently not accepting orders, please read our blog to learn more.

Our completely retro-reflective Lumen frameset.

Our frames are hand welded of double butted 4130 Chromoly steel. They're designed to be light but extremely durable, and guaranteed for 50 years.

*Update - We have a very limited supply of Lumen Valencia framesets, but if you fit a 50cm frame (see the size chart in the images to the left) and are looking to ride single speed or fixed gear, let us know!


  • Square taper bottom bracket: 68mm x 103mm standard/ British-ISO threading
  • Headset: threadless 1 1/8"
  • Seatpost: 27.2mm
  • Fork spacing: 100mm
  • Dropout spacing: 120mm Valencia