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

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