Folding Stem (THINstem)



  • Revelo THINstem


  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.
SKU: CO-THIN Category:

Additional information

Weight 0.9 lbs
Dimensions 5 × 5 × 6 in

1", 1.25"

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Folding Stem (THINstem)

Folds Handlebars 90° in Seconds

Your stored bike is only as narrow as your handlebars. If those are in the way, this is the answer. Fold your bars out of the way quickly while your front wheel remains in the same place.

True to the original Flatbike mission of flattening your existing bike, this add-on stem pivots your handlebars to 90 degrees in seconds without the use of any tools, so your bike fits more tightly against a wall. The THINstem pairs well with our pop-off pedals to make an even flatter profile and easier storage. 

NOTE #1: The primary measurement is your handlebar diameter. If you are not sure which size (1” or 1.25”) your handlebars are, take a quick look at the sizing video. (If you already have a CHANGE bike or are getting one, all models except the CHANGE 702 fit the 1.25” THINstem).

NOTE #2: These are to replace “threadless” stems, where the fork tube extends above the frame. If your bike is older, and has a “quill” stem instead, you’ll need a quill stem adapter first. If you’re new to threadless stems, take a quick look at the THINstem installation video.



  1. Steerer tube 1 1/8″ (28.6mm) to a 1″ (25.4mm) handlebar
  2. Length: 70mm
  3. Weight:10.75 oz, 306 grams
  4. This is the same THINstem as for a 1.25″ handlebar, but with a set of handlebar shims.


  1. Steerer tube 1 1/8″ (28.6mm) to a 1.25″ (31.8mm) handlebar
  2. Length: 70mm
  3. Weight: 10.25 oz, 288 grams