One of the lightest carbon hardtails available, the Open ONE+ is the ultimate cross country weapon, born in the Swiss Alps. While most top-shelf ONE+ builds hit the scale well under 20lbs, the bike’s stiffness and well-behaved trail manners belie its feather weight and aggressive geometry. Part of this is owing to its ability to run up to a 2.4″ tire on a 29″ wheel, or a 3.0″ plus-sized rubber on a 27.5″ hoop, thanks to Open Cycle’s trademark dropped chainstay design. A Boost 148mm rear triangle gives the ONE+ additional stiffness, as well as a clean chainline for precise shifting in poor conditions.

Designed around a 100mm fork, the ONE+ is available in three sizes and a matte black colorway.

  • 890g frame-only weight
  • BB92 Bottom Bracket
  • Colors: Matte Black
  • Internal Cable Routing
Open ONE+ Frame Geometry Size Seat Tube Length Top Tube Length Stack Reach Seat Angle Head Tube Angle Head Tube Length BB Drop Front Center Chainstay Length Wheelbase
S 42 57.6 58.4 40.1 73° 71.0 10.2 40.0 63.5 41.0 105.6
M 44.5 60.2 61.5 41.9 72.5 71.4 9.7 57.0 65.5 40.7 109.2
L 50 64.3 64.7 43.6 72.0 71.4 13.5 52.0 68.4 40.7 112.1


The Twelve Days of Breathtaking Builds: Day Nine

Do you miss the days of mountain bikes with 500mm handlebars, terrifying descending geometry, tiny tires, and mismatched fading anodization? We don't either, which is why this lustrous Open ONE+ made its way onto our Twelve Days of Breathtaking Builds.


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