Folds your bike flat

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Revelo THINstem

Folds your bike flat


Folding stem for 1″ handlebars


Flatbike Guarantee

The average bike takes up almost 15 square feet (5 ft x 3 ft). That’s considerable space indoors even in a large garage; In an apartment or cubicle, it’s massive–enough to send your precious bike outside.

The THINstem changes everything. True to the original Flatbike mission of flattening your existing bike, this add-on stem pivots your handlebars 90 degrees in seconds with no tool, so your bike fits against a wall. It pairs well with pop-off pedals, which come automatically with every CHANGE bike, but we also sell separately at Flatbike.

Even if your bike already folds in half, like with a CHANGE bike, this is a useful add-on for those times when you have enough linear space to leave the wheel on, but not enough width for the handlebars. (We have one on each of our bikes–one beside the car in the garage, and the other bike in the hallway behind the door.)

NOTE #1: These currently fit only 1-inch handlebars, like on the CHANGE 702 commuter bike. But a larger size is in testing, and Flatbike is on the short list to receive it.

NOTE #2: These are to replace “threadless” stems. If your bike is older, and has a “quill” stem instead, you’ll need a threadless adapter first.


  1. Keep your bike indoors to protect it from the elements.
  2. Store your bike cleanly against any open wall.
  3. Put more bikes in less space in a crowded garage.
  4. Carry more bikes neatly on a car bike rack.
  5. Slip your bike easily into “full” bike racks outside your dorm or classroom.


  1. Steerer tube 1 1/8″ (28.6mm) to a 1″ (25.4mm) handlebar
  2. Length 90mm
  3. Weight: 11.45oz, 325 grams

How to install a THINstem