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So far it’s a solo ride.

Semi-Custom Open U.P

Semi-Custom Open U.P

The Semi-Custom Open U.P

Builds starting from $6700

A true weapon in the hands of any experienced rider, the UP has rapidly (and somewhat unexpectedly) become one of our house favorites, capable of conquering almost anything we've thrown at it. Read more

Above and Beyond Since 2006, we've been creating the world's finest dream bikes with our signature approach to custom builds and customer service. Our Custom Program
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Semi-Custom Open U.P
Semi-Custom Open U.P
Semi-Custom Open U.P
Semi-Custom Open U.P


When Open Cycle launched the U.P, an acronym for "Unbeaten Path", in early 2015, it was still something of an anomaly. Disc brakes and drop bars were just beginning to sink in, with some manufacturers and custom builders venturing into murky waters, offering bikes with road-ish geometry and clearance for fatter tires, or cyclocross bikes with slightly more road-going geometry. Then, the U.P hit the scene, and perceptions were shattered. Designed by Cervélo's former head engineer and co-founder, Gerard Vroomen, the U.P broke the mold by creating a new one. With massive amounts of tire clearance, drop bars, and a nod towards modern mountain bike geometry, the U.P defies categorization. Half road racing machine, half trailbike, it's as close as we've come to the "one bike" solution, offering what we can only describe as a sheer sense of freedom to go anywhere we want on long rides. With the ability to swallow over a 40mm tire on a 700c rim, and a 2.1" mountain bike tire on a 27.5 wheel, one would assume the U.P is a jack of all trades and master of none. Fortunately, Vroomen is one step ahead, designing the U.P with a dropped driveside chainstay, allowing the frame to run a perilously-short 42cm stay length and maintaining nimble handling characteristics that are so often lost in the name of tire clearance. Relatively low, almost road racing geometry keeps the bike sharp underfoot, and the 1100g carbon frameset is lithe and responsive while still smooth over braking bumps and pavement chatter alike.

Versatility is an understatement with the U.P, and its ability to run both 700c and 27.5" wheels lends it a wide swath of applications when paired with both. A set of 32mm slicks on the 700c wheels and 2.1" knobbies on the 27.5" set essentially turns it into two bikes in one. The slack seattube angle is designed around a zero-offset seatpost for proper setback, and the Open UP is capable of running both 2x and 1x drivetrain setups, though we tend to tilt towards SRAM's Force 1x11 setup. The U.P is also dropper seatpost compatible, and one of our favored setups uses a 1x drivetrain with 2x shifters, using the left-hand SRAM trigger to actuate the dropper mechanism.


Ordering Process

  • Accepts mountain bike tires up to 2.1”, 47mm RoadPlus tires in 650b, 700c gravel, cross and road tires from 28-40mm wide 
  • Strapless bag mount
  • Vertically thin chainstays and seatstays
  • Flat-out downtube 
  • Zero-setback seattube
  • Internal routing 
  • Thru-thread dropouts 
  • Dropped chainstay

Whether you’re already set on a certain make and model of frame, or still have some questions about how to go about your build, drop us a line and we can talk through your options. From the first detail to the final finish, we'll help you dial in the perfect set up for your next dream bike.

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