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916 NW 21st Avenue
Portland, Oregon 97209


21st Avenue Bicycles specializes in road bike sales, service and repairs. Located in NW Portland, Oregon, the shop can help you find the perfect bike for your ride. Bike commuting, road biking, racing or the casual cruise. 


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Soma Grand Randonneur Custom

park chambers

Built in equal measure for Randonee Rides, long days in the saddle and multi-day dirt road adventures, this Soma was a joy to work on and a beauty to behold. We hear it rides pretty damn well too.

The build started as a testbed for 650b frames. The customer wanted to be able to transfer all components to a future custom 650b wheeled frame if he likes the platform, so we went all in to make it rugged, pretty and functional in equal measure.

You may see this bike in action if you attend The Oregon Outback or any Oregon Randoneur rides


  •  A wide range 2x10 drivetrain with simple and reliable downtube shifters and White Industries VBC crankset- 34/48 rings for now, potential to run "ridiculous" gearing such as a 28/48 for extended dirt touring.
  • Schmidt SON dynamo and B+M Luxos U light/charger. - Light up the night and charge your stuff during the day via an onboard USB port located near the map case
  • Nitto mini rack and mini-lowriders. A two-part rack system with removable lowrider rack. Use panniers for tours, ditch the extra weight when not touring.
  • Brooks Cambium saddle and bar tape, cushioned by Fizik Gel pads underneath.