Save hundreds off these folding frames

It’s Fall now, and for some folks, more than the leaves are changing. It’s also a time for a change of thinking–from planning the perfect bike ride to planning the perfect-riding bike. After all, you’ll have all Winter to put it together, and be finished and ready for action next Spring.

Start building your folding full-size bike with a folding frame for just $480.

Build your dream bike…that folds.

Just the availability of a folding frame is a cool thing. These aren’t your typical folding bikes that require a boatload of specialized, hard-to-find components. Instead, these are full-sized frames for mountain or gravel bikes, that can be outfitted with off-the-shelf components of your choice. The ultimate in mix and match.

And then, when you’re done, fit your bike in any car trunk, cubicle, apartment, elevator, spare room, etc., because your bike can do this:

It all starts with this frame.

633 folding frame
The CHANGE 633 folding frame is tested to European MTB standards (EN-14766), yet folds in half–the only folding frame in the world we’ve heard of to accomplish that feat.


folded frame
Technically, this is a folded road bike frame, but the principle is the same. When folded, a CHANGE 633 MTB frame is the same dimensions as the front triangle of the frame (top tube, down tube, seat tube): Approximately 27″ long by 25″ high.

In every CHANGE 633 box, you’ll find:

  • Black frame with folding latches installed (under the seat, under the bottom bracket) and 31.6mm seat post latch.
  • Standard threaded pedals with a quick pop-off function
  • Headset measuring 1 1/8″
  • Derailleur hanger
  • Carry bag
  • Warranty card

What you’ll need to add…and why do all this.

To turn this frame into the bike of your dreams, you’ll need to make selections in these areas:

  1. Wheels and tires
  2. Fork (and stem and handlebars)
  3. Bottom bracket
  4. Groupset (derailleurs, crank, cassette, shifters, brake levers)
  5. Disc brakes
  6. Seat and seatpost

That’s a lot of additions! If too many, you may just want everything already assembled, like with a CHANGE 611 folding rugged hybrid or a CHANGE 612 folding MTB. Even if you already know what you want to do differently, these two bike pages (in the Specification section) provide guidance about what components already are known to work well.

Why might you want to deviate from the specs of the bikes above? Here are some typical reasons:

  • You want to make a gravel bike or touring bike with drop bars, and we don’t offer it yet.
  • You want the Shimano Ultegra groupset. Shimano Deore is mid-range among Shimano drive systems, but you want top of the line, or close to it.
  • You want SRAM 1*12 shifting.
  • You want to build a folding e-bike with a rear-wheel motor.
  • You want 27.5″ wheels, but not the CHANGE 811 or CHANGE 812 bikes that already offer this.
  • You want entirely different technology, like spokeless wheels or tubeless tires.

From dream to reality…the gritty details.

The six numbered component areas above are a good sequential list. Your wheel choice drives your fork selection. Your handlebar selection drives the type of shifter levers you select. And your bottom bracket defines what groupsets you can choose.

For wheels and tires, this frame is designed for 26″ wheels. But that has not limited customers…

modified MTB frame
Back when we offered a white version, this trucker swapped out his 26-inch wheels for 27.5. At that size, there is no additional room for fenders.

The frame can handle tires as wide as 2.2″.

For a fork, you have a choice between an MTB shock fork (like on the CHANGE 612),  or an MTB-length solid fork (like on the CHANGE 611), or any other 1  1/8″ straight (non-tapered) fork.

How long should the fork be?

The MTB-sized fork above on the right is 440mm to the crown; you can see a lot of room between wheel and frame. For comparison, the CHANGE road fork has a length of 373mm to the crown. Given that the MTB fork has 100mm of compression, this indicates that the entire range from 440mm to 373mm is acceptable range for fork size.

Before you install your fork, you’ll need the headset pressed in.

head tube
You can buy a headset presser to install your headset or just look on YouTube and build the tool yourself out of two nuts, two wood pieces, and a long bolt. Same results.

The bottom bracket area is threaded. We’ve been using Shimano SM-BB52 bottom brackets on the CHANGE 611.

bottom bracket
You’ll need a special tool to screw in your bottom bracket. Either spend the $30 to get one, or pay your local bike shop $30 to screw it in professionally.

Other than those two special tools, you’re home free. Everything else is standard hex wrenches.

The groupset (crank/chainrings, rear cassette, front derailleur, rear derailleur, shifter levers and brake levers) will be your biggest ticket item. What bars you choose–drop or flat–will determine which levers are compatible with your bike. What wheels you choose will also choose will also determine how many sprockets fit on your cassette (9, 10, 11, or 12); that in turn, drives your selection of derailleurs–and also your shifter levers.

Compared to that, brakes are easy. Get disc brakes.

Your seat post needs to be 31.6mm, and your seat will fit on that with a standard fitting. If your bike design is more of a lean-forward design, get a narrower seat–if a more upright seated position, get a wider seat.

Time to take the first step?

Normally, this frame retails for $750. But right now, while supplies last, we’re dropping the price hundreds of dollars to just $480. Internationally, that’s like getting free shipping, so we’ve already fielded questions on this frame from Austria to Brazil.

Or, if you’re from Canada, where you get already free shipping, it’s like having your import tax covered. Which is probably why Canadians from Calgary to Pickering have already been snapping up this frame before we even announced the sale. Good sleuthing!

But which frame is right for you? Here’s a useful metric size chart—tip of the cap to our friends up north—that shows the recommended height range (in the bottom row) for each frame size. These are guidelines, and your needs can vary based on preferred lean, leg vs. torso for you, etc..

Bottom line…there are many ways to get to your perfect next ride. And now is a great time to get started on this Winter’s perfect-ride project. Get your folding MTB frame today!

Happy planning, and see you next Spring on a brand new set of wheels.

Bob Forgrave's Signature

Bob Forgrave




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