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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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Filtering by Category: Custom Bicycles

Moving Electrons to Help You See

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We have been pretty satisfied with the Momentum line of bicycles from Giant. The "Street" model is just about all a person needs to get around town and pardon our French but a hell of a value at $425. A couple weeks back we decided the only thing that would make it more ready for commuting is a set of dynamo lights. We're big fans of dynamo lighting- secure, always-there lights with no need to worry about charging and more illumination than most mid-priced battery lights. So we set up a Momentum Street with a Shimano Dyamno -equipped wheel and a set of B+M lights. The Shimano hub is a disc-ready model in case someone ever needed to transfer the system to another bike, and we also equipped the hub with a Pitlock lockign skewer, which is just about the only truly theft-proof system on the market. The EYC front light is tiny and BRIGHT!, and the rear Secula fender-mount light has a reflector plus a bright ring of LEDs.

The best part about the package is that it can be had for $675. We think having good lighting is imperative for commuting, and this balance of bike cost/light cost is pretty reasonable for someone who rides to work year-round.

Our Hand Built Wheels Beat up Your System Wheels

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Yep. We said it. "System" wheels can be cool and all, but at the end of the day they are 100% less special and 47.8% more likely to contain tough-to-replace parts than a set of wheels built around quality hubs. The wheelset pictured was laced up for Cyclocross racing and off-season exploration. 28 hole White Induistries CLD hubs offer durability and servacibility- Titanium freehub bodies last way longer in the mud pits of CX. Also compatible with multiple axle configurations, these hubs should be at least a little Future Proof.

Wheels need rims, and we like these HED Belgian Plus models quite a bit. Sure they're almost 500g ea but they make a 33mm tire look like a 36 and are pretty darn tough and tubeless-ready to boot! We've had other sets go out under heavy riders on dirt roads and come out just fine after years of riding.

Gotta hold hubs and rims together, and can't bear Sapim CX-Ray spokes. Light and even a wee bit aero. The whole package was around 1570g without rim tape and valves, which is pretty darn competitive. More importantly, they will ride great and if anything ever breaks or wears out, it can be repaired or replaced without having to hunt high and low for parts.

Clean, Classic, Classy. Twin Six Rando Custom

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We've stocked Twin Six clothing for a few years now, and dig how their line is full of solid designs- timeless without being "retro" but not lacking for solid cuts and good technical features. Over last winter, they introduced a line of frames with the same vibe, and we recently had the opportunity to build up someone's Dream Bike on the "Standard Rando" frameset. Tim worked with customer Cory to make a value-packed go-anywhere machine for, well, going anywhere. A mixed Ultegra/105 drivetrain was matched to a hand built set of DT 350 hubs and WTB Frequency CX tubeless-ready rims laced up with DT competition spokes. TRP brakes, Easton/Salsa/Brooks stuff rounded out the package. Nothing too fancy, but all great durable stuff that should last a long damn time and handle just about anything from commuting to gravel to Randonnee rides (surprise surprise...)