CHANGE 633 frame

Build the perfect mountain bike.


(Free shipping in the U.S. and Canada)

Size Chart

Flatbike Guarantee

The CHANGE 633 folding mountain bike frame allows you to create the mountain bike of your dreams. This convenient component is the only folding frame in the world that’s certified for toughness and durability. Start with a CHANGE 633 lightweight mountain bike frame and build it out with your own components for a custom hardtail that’s yours and yours alone. This folding mountain bike frame weighs a total of 5.28 pounds for speed, agility, and portability.


  • Frame
  • Locking devices above the bottom bracket
  • Locking devices under the seat
  • A quick-release 31.6mm seat post
  • Standard threaded pedals with a quick pop-off function
  • Headset measuring 1 1/8″

With the CHANGE 633 lightweight mountain bike frame, you can easily transport your upgraded or brand-new bicycle anywhere. Ride new trails, explore rugged terrain, and adventure down your favorite streets without worrying about transportation or storage when the ride is over.


  1. Folding a full-size bike down into a trunk-sized 36 inches is awesome.
  2. You can stow away and protect your bike from tampering and theft after riding.
  3. There’s absolutely no need for a bumper or roof rack.
  4. Indoor storage makes shielding your bike from the elements easy.
  5. It comes with a handy carrying bag that also protects car seats and interior.
  6. It’s compatible with many components, so you can build your ideal bike.


FRAME: Double-butted 7005 aluminum. Black matte finish.

EN 14766 certified reliability.

How to fold and unfold a CHANGE Bike

The easy way to put on toe cages

CHANGE Bike hybrid cover

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