Downtube 9FS Full Suspension Folding Bike

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9sp Full suspension folding bike
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Light aluminum frame, comfortable full suspension, 9sp cassette drive train w/trigger shifter ( expandable ), disc hubs, cold forged cranks, aluminum pedals, bag & pump interfaces, off road worthy
9FS folding bike sunset


Folding bikes need more suspension than regular bikes and we listened to the needs of our customers across the globe. So we are now introducing the Downtube 9FS (9 speed full suspension) folding bicycle! It is finally here and many people are pleased and so will you! For one, it is the model that is the most comfortable compared to our other bikes. It is preloaded with adjustable suspension located in the front and in the rear.

You can take this bike on long rides without needing any more than nine speeds! The bike’s build quality is amazing and solid as a rock! The wide handlebars make it easier to maneuver. You will even forget that you are riding a folding bike, if you are not careful.

Most folding bikes have smaller frames and wheels, which makes them stiffer than larger- wheeled bikes. Our 9FS bike is delivers super comfort and is EXACTLY what is going to work for most riders. You won’t want to stop riding! On top of being more comfy, you will love the high quality drivetrain by SunRace, which we added. We are proud to announce that its performance is similar to that of the Shimano Deore. In addition to the top notch frame with comfortable suspension, we added several high end parts and a small fold. If you could describe this bike in one cool sentence, it would be “This bike rocks!” It has some incredibly amazing features that you will enjoy every time you hop on this bike. It will fulfill almost all of your needs and more…

On this bike, we include features that will make it more enjoyable to go on long rides. You will notice the aluminum frame, rack braze-ons, but rack is not included; integrated headset, and removable frame protector.

Do you want to know why this bike stops FAST? I bet you will love to know that too! Well, its high end Tektro V brakes, two finger levers, which are matched with double-wall aluminum machined-sidewall rims is the reason; since this allows the brakes to become engaged on a textured surface!

We also offer standard upgrades for free and this includes the headtube bag interface and water bottle braze-on, but cage is not included.

AND that’s not all!

With its adjustable suspension, it is so much easier to go up the hill. This bike is now fully disc ready. Yes, you heard right - it is 100% disc ready! In fact, we also include disc hubs that accept 6 bolt rotors. We also include frame tabs for the disc as well as disc cable routing. It also comes with a front derailleur braze-on with cable routing, which allows you to easily turn this bike into a 27 speed bicycle in a snap. Without hindrance to the fold, when you buy this bike, we customize it to your liking by adding mini bar-ends and high-rise handlebars.

When folded, it fits in any size vehicle. You will get tons of attention when riding on your bike. You will be almost obsessed with this bike when you get it. So what are you waiting for? Hit the purchase link and get to riding!

  • Integrated threadless headset
  • Front derailleur braze-on will allow one to turn it into a 27sp bike.
  • Head tube and seat tube interface for bags, pumps, or battery packs
  • Rear swingarm bolt can be removed from non-drive side (easy to disassemble the frame for super compact storage)
  • Lighter stem which folds thinner
  • Upgraded drivetrain w/trigger shifters
  • Disc hubs (front and rear) with disc mounts on the frame
  • Upgraded brakes, levers, and noodle
  • Upgraded BB
  • Lighter fork
  • Powder coat paint with clear coat on top.
  • Aluminum stem dial (older models used plastic)
  • Upgraded cable housing
  • Upgraded kickstand mount
  • Cold forged cranks
  • Sealed cartridge bottom bracket.
  • Preload adjustable trans-arch suspension fork
  • Rear disc tabs
  • Lightweight and easy to fold alloy pedals
  • Alloy and stainless frame and stem quick releases
  • Machined sidewall rims
  • Lowest price 9-speed folder brand in the world...all others cost over $1,000!
  • 24H/28H spoked front/rear wheels for light weight
  • 1.5" front tire for low rolling resistance
  • Replaceable 48T chainring
  • Stainless Steel spokes
  • Upgraded brake levers with textured grip
  • Frame interface for pump on the rear of seat tube
  • Mini bar-ends (With many folding bikes, it is difficult to steer with a long stem. Bar-ends solve this problem but make the bike difficult to fold. Not with our mini bar-ends - they are easy to turn and easy to fold!)
  • Folding left and right pedals for compactness
  • Plastic chainring cover to make keep chain from getting dirt and grime in your car or storage area. Also keeps the chain from falling off
  • Ding-a-ling bell to alert pedestrians and cars
  • Extra-wide rise handlebars to allow the rider to stretch out and feel comfortable. Rotating the rise bars can push the rider towards the saddle ( for upright comfort riding ) or away from the saddle (for more aggressive riding)
  • Super duper soft comfortable grips
  • Adjustable height stem allows bike to be used by kids and adults
  • Front and rear Quick Release skewers to quickly remove either wheel
  • Velo "love channel" saddle
  • Braze-ons to allow a water bottle cage or pump
Folded size: 14" x 24" x 35"
Rear swingarm removable for super-compact folding (used for airplane travel)
Weight: 27 lbs
Folding time: 13 seconds
Rider Weight: 255 lbs max.
Frame: Xtra-Light aluminum frame with 850-pound coil spring shock
Fork: Zoom fork with disc tabs for disc brakes
Saddle: Velo "love channel" saddle
Seat post: Kalin 500 mm aluminum seat post
Brakes: Tektro aluminum V-brakes with strong springs (frame includes cable routing for disc brakes and disc-compatible hubs)
Brake Levers: Tektro aluminum brake levers (with 2-finger comfort grip)
Front wheel: Quando 24H QR disc hub with double-wall rim
Rear Wheel: Quando 28H QR disc cassette hub with double-wall rim
Tires: Kenda 20 (406mm) x 1.5" front and 20 (406mm) x 1.75" rear
Shifters: Sun Race 9sp triggers (the best value trigger shifter in the market)
Cassette: Sun Race 9sp 11-32 (this is one of the nicest cassettes on the market) Derailleur: Sun Race M93 9sp (CNC machined one of the smoothest derailleurs)
Cranks: Prowheel aluminum 170 mm 48T with chain guard
Gear inches: 28 to 81.5
Chain: KMC with masterlink for super-quick removal & cleaning
Pedals: Folding right and left

9FS Features

9FS Folding and Unfolding


One year limited warranty. Two year warranty on the drive train through Sun Race.

30 day satisfaction guarantee on all Downtube bikes.

Please see our terms and conditions for details.

15 Reviews Hide Reviews Show Reviews

  • 5
    Love my new 9FS!

    Posted by Connie Caruso on Oct 10th 2017

    I Love my new 9FS! It is very light, easy to fold, fits me great.

  • 5
    Very comfortable ride

    Posted by Anatolijus Jukevicius on Sep 4th 2017

    Very comfortable ride (thanks to full suspension), easy and quick folding/unfolding, love the fact it has 9 speeds. Sturdy built bike. Was able to mount Bell dashboard (speedometer/odometer) and high power headlight and smartphone mount on steering bar without sacrificing foldability of the bike: when folded neither of accessories touch bike's frame nor scratch it. Couple negative findings: First, when the bike is folded, front brake cable's adjustment nut touches rear fork and if the bike is in vibrating environment (in my case - with me in my truck) - that nut scratches off some paint off rear fork. I hope fork's metal is stainless and it won't rust at that spot where paint is scratched off. I will see if I can adjust front brake handle, so it is pointed more downwards - maybe that way it won't touch rear fork when folded. Second, I did not weigh the bike, but it feels like it is heavier than it looks like by it's size. As I wrote, I did not weigh the bike, so I am not saying weight specs are false. Just, I own another bike, non foldable Trek 1.5c road bike, it is much bigger bike aluminum frame with carbon fiber fork and it feels like both bikes weigh the same, when I would love if my foldable bike would weigh less. I guess, it is hard to have it both ways - comfy full suspension ride and lightweight. Bottom line, it is a good well-built bike offering descent balance between ride comfortability and portability.

  • 5
    Great bike owned since 2008

    Posted by Steve Murray on Sep 4th 2017

    I've owned my 9FS for ten years now with no problems., Great durable, comfortable folder that's easy to throw in a car truck and travel with. Upgraded it with Schwalbe tires and BB5 disc brakes and it's a pleasure to ride. You won't find quality folders at this price point anywhere.

  • 5
    over 5 years now

    Posted by Francois Dubuc, Squamish BC Canada on Sep 4th 2017

    we bought two FH8 (closest model to 9FS now) bofore setting sails south....after five years on the boat and biking thru Mexico-ElSalvador-Nicaragua-Panama- the caribean island-french polynesia.....I can truly confirm that our downtube are a sturdy,efficient and reliable bike. they are both still on all originals parts, only the SS chain develop some rust (aFter no rinsing from beach ride!) , not even a flat tire after all that milage in developing countries.....i call that lucky....lucky that i bought Downtube!!! .a smooth ride that last.... captain Frank, now riding in Tahiti...

  • 5
    Wow Great bike

    Posted by Isaac N. on Sep 4th 2017

    I can't believe I bought this bike for the price of a Dahon Speed 7.

  • 5
    great folding bike

    Posted by Janusz Swider, Warsaw Poland on Sep 4th 2017

    I think my 9FS is the first Downtube in Poland. A few months ago I asked my daughter to buy it and send to Poland. The bike looks nice, sturdy and well made, I like it . A frame size a little bigger than Dahon Jetstream is just for me /I am a 5'9" guy/. Now we have winter with snow in Poland, I'm waiting for the warmer days to hop on this bike to enjoy the long ride.

  • 5
    Very comfortable ride

    Posted by Molinaro Drafino on Sep 4th 2017

    I can't believe how comfortable this bike is to ride. Much better than any other folding bike I have ever ridden.

  • 5
    Wow! Your bike is great, I LLLiked it! :)

    Posted by Lyndawer on Sep 4th 2017

    Interesting design. So, this bike very nice, I LLLiked it! :)

  • 5
    Downtube 9FS Full Suspension Folding Bike

    Posted by PR on Sep 4th 2017

    Really enjoying riding this great bike. Everything working fine on the bike. I usually ride 7-10 miles 5 days per week. Really a good idea to tighten everything up after you unpack the bike and make sure everything is adjusted right. May want to have a bike mechanic do this if you are uncomfortable doing this yourself. Thanks for the fast ship and fast responses to my questions.

  • 5
    Great bike!

    Posted by Jason Margulies on Sep 4th 2017

    I received my bike yesterday. It was fully assembled and easy to unfold, set up, and adjust. I took it for a long ride this morning through Miami Beach on various terrain - street, sand, wood boardwalk, and pavers - the bike as comfortable, handled well, was sturdy (I am a 195 lb. 6'0" man), and shifted well. When I returned to my condo, it was very easy to fold and put in my closet. Also, I had ordered a rear trunk bag with my bike which didn't arrive with it. I emailed Yan who immediately emailed back, explained it was an error and apologized an assured me it will be sent out immediately. Good job!

  • 5

    Posted by Daniel Long on Jul 31st 2016

    I'm blown away by the smooth ride my 9FS delivers.
    I ride in nyc, I need a bike that is comfortable, compact, durable and can handle all the BS that NYC will throw at me during my commute. Thanks to Yan such a bike is now in my possession.


  • 5
    Solid and comfortable - 1 year update

    Posted by Christopher Ihm on Jul 31st 2016

    In a little less than a year I've put just short of 300 miles on the 9FS. I should bike more, because I'm gaining weight - but the bike is handling it very well despite my minimal maintenance. As a full-suspension bike with moderately-wide tires, the 9FS is smooth and comfortable to ride. I've added some basic stuff like rechargeable lights and a removable basket, but the tires and seat remain "stock" and I'm fine with them. I keep it all in my car trunk so I can bike after work. I find it takes me far longer to change into "biking clothes" at 5pm than it takes to pull out and setup the folder. So I shoot for two rides a week - once on the weekend and once after work. This is a well-built, easy to use and comfortable bike, so I have no excuse to blow off riding it, which is exactly what I was looking for.