FENIX BYKES folding full size santos 275 plus mountain bike (3)

Having already created a clever way to create a full size folding rigid 29er/road bike, Fenix Bykes owner Scott Turner decided it was time to adapt the technology to smaller wheels and bigger tires. Specifically, Scott wanted to be able to take a bike with him when he went to visit his family in Florida. Not far from one of Florida’s best spots for mountain biking, the Santos trails served as the inspiration for the Santos and Santos Plus. If you’ve ridden Santos you know that thanks to all of the jumps and features (that are still being added to by folks like Ray Petro), a bike with suspension and slacker geometry can come in handy.

Wanting to put a full size hard tail mountain bike with a longer travel suspension fork and 27.5″ wheels and even a plus size mountain bike into a travel suitcase meant a few modifications to the design were required…

FENIX BYKES folding full size santos 275 plus mountain bike (5)

FENIX BYKES folding full size santos 275 plus mountain bike (6) FENIX BYKES folding full size santos 275 plus mountain bike (7)

Fenix Bykes use a unique folding method which centers around an eccentric bottom bracket that is split into three pieces. The center section is fixed to the seat and down tube while the outer two sections pivot around the center and are attached to the chain stays. Once you remove the bolts holding the seat and chain stays together and loosen the BB and seat stay hardware, the stays are free to swing closed to a much more compact position.

FENIX BYKES folding full size santos 275 plus mountain bike (2) fenix santos mountain bike folded

Each bike closes a little differently, with the Santos and Santos Plus folding the chain stays under and the seat stays over the frame. On the left above is the Fenix Macleod and the right is the Santos suffer into their respective cases. One major benefit to the Santos appears to be the ability to fit the wheels into the case without removing the tires.

Currently, Fenix does not offer their own cases but is looking into it. The case on the left is from Co-motion cycles. Built around a 140mm travel fork, the Santos uses 142x12mm dropouts, an eccentric BB, and sells for $2100 for the frame or complete 1×11 builds that start at $3750. The Santos Plus will be a 27.5+ bike with rigid, suspension, and Rohloff options available starting at $3300 for the Rigid.

FENIX BYKES folding full size santos 275 plus mountain bike (8) FENIX BYKES folding full size santos 275 plus mountain bike (1)

Fenix also offers the non-folding B2B (back to basics). The multi-purpose road bike has adjustable dropouts, full rack and fender mounts, 35mm tire clearance and starts at $3150 for complete builds.

And because he’s gotta pay the rent, the 8 speed Alfine Di2 Macleoud folding 29er shown above is currently for sale on ebay. It’s brand new and is starting at $2800…



  1. Francois on

    Nice concept. Any idea how it compares to S&S couplers? The front triangle is not affected by the folding, which is probably a good idea (S&S claims that their couplers don’t affect the stiffness of the downtube, but I never tested it myself).

    However, it’s a bit pricey. At that price, you can get a custom made bike with S&S couplers.

  2. Tomi on

    @François : the frame are build by Ted Wojcik Custom Bicycles. Also I don’t think they keep a huge stock (are they even made to order ?) which explain the price. This is low volume business.

  3. Alex on

    I’ve seen one of these up close and in person and took a spin around the block on a Santos. Very well thought out and high quality stuff. As mentioned above, they are all hand built by Ted Wojcik…

  4. phil on

    Awesome concept, but wtf expensive. I ca buy a last year’s model Nomad C for that much. Money would better spent renting bikes until the price comes down imo.

  5. Veganpotter on

    Pretty cool, I’d like to see a weight comparison with this and S&S Couplers and a stiffness comparison. Standard couplers add stiffness. I can’t really say how much but couplers are so much bigger in diameter than the frame that its undoubtedly true. I couldn’t say with this but it does look like it may be easier to build this bike up in a hotel compared to my bike which would be nice

  6. Tim on

    I live close to Scott and had the change to spend a fair amount of time on his folding bikes. Once they are bolted together they are incredibly stiff. I’ve seen one of his local customers who weighs in at 250 lbs put his first gen Macleod through some serious MTB trails. I can’t say I would want to try a small drop on an S&S bike.

  7. john on

    No mention of whether it fits into a 62″ case to avoid extra airline baggage fees?

    The frame looks great but I’d probably go with a Surly World Troller instead.


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