Downtube 9FS Full Suspension Folding Bike

(18 reviews) Write a Review
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

Our Crown Jewel: A full suspension folding bike w/ top notch components

The Downtube 9FS takes folding bike comfort to a whole new level. With its state-of-the-art front and rear suspension system, the 9FS is the most comfortable bike we offer. The suspension will absorb the road imperfections, which will keep your body fresh. Long rides will seem shorter than ever thanks to its comfort and build quality.

The top tier light aluminum frame makes the 9FS smooth to ride around the clock. It's also rock-solid when it comes to build quality and has an expandable frame will simply grow with you.

The 9FS comes fitted with a front derailleur braze-on ( with cable routing ), disc brake tabs, head tube bag interface, pump interface, kickstand mount, two water bottle braze-ons, rack braze-ons, and removable frame protector from below can act as a kickstand when folded.

All this makes taking the 9FS on a trip around town or around the world as convenient as it gets.

The quality of the 9FS begins with the suspension system and solid aluminum frame, and extends into every single detail. This includes massive welds, beautiful design, cold forged cranks, and lightweight integrated headset system.

Ride the 9FS around and you will instantly feel the quality of the high end 9sp racing drive train. With a performance matching that of the Shimano Deore, this is the best quality drive train you will find on a folding bike under $1000.

Once you try using the brakes, you'll notice how powerful they are. The 9FS comes fitted with high-end two finger Tektro levers (with a comfort rubber grip) Tektro V brakes and matching double-wall aluminum-machined sidewall rims.

The textured rim surface is essential to get optimal braking performance, other manufacturers still use slick rims which allow the brakes to slide on the rims surface. This bike is also disc brake ready with 6-bolt interfaces on both front and rear hubs, and cable stops for discs.

The stock brake system is ideal for the majority of customers, and better for travelers ( disc rotors are likely to bend while folding & unfolding) . Please read our disc vs V-brake article to decide which is best for you. Overall, the quality brakes make stopping quick and easy.

Turning the 9FS into an 18 or 27-speed bicycle is super easy thanks to the front derailleur braze-on with cable routing, which is included with every 9FS folding bike. We use 130BCD cold forged cranks which will accept another chainring for easy conversion to 18sp. for faster downhill riding, all you have to do is place a bigger chain ring. Most customers go with 58T-60T big rings. Please read about double and triple chainring conversions.

Despite being so feature-packed, the 9FS is extremely portable. When folded, you can conveniently fit it in any vehicle, boat, or train which makes carrying it around as pleasant as riding it.

The 9FS a steal at $599. Folding bikes with similar features are more than twice the price. This is due to our low-cost, customer direct high-value business model.

If you are looking for a premium folding bike with suspension at a bargain price, the 9FS is what you are looking for.


  • Folded size: 14" x 24" x 35" 
  • Weight: 27.5 lbs 
  • Folding time: 13 seconds 
  • Rider Weight: 255 lbs max. 
  • 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
  • Gear inches: 28 to 81.5 
  • Upgraded drivetrain w/trigger shifters
  • Disc hubs (front and rear) with disc mounts on the frame
  • Kickstand frame mount
  • Cold forged cranks
  • Sealed cartridge bottom bracket.
  • Preload adjustable trans-arch suspension fork
  • Front & 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
  • Brake levers with textured grip
  • KMC masterlink chain for super-quick removal & cleaning 
  • 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


FRAME Downtube Aluminum frame
Shock HLT-400-1 850B x100L
FORK HL Corp CH-190AMS  20" alloy  suspension fork
HANDLEBAR HL Corp. MTB-AL-153PP  W:580 alloy
HANDLEBAR STEM HL Corp with QR for height adjustment
BAR ENDS Kalloy BE-21 alloy  L:80mm
GRIPS Jie Li JL-311/312 110/80mm
SADDLE Velo VL-5006
SEAT POST HL Corp. SP-233   alloy 30.4x500mmL
CHAINWHEEL SOLID-242PP-F steel single 1/2"x3/32"*42T
CRANK Prowheel 170mmL alloy
CHAIN GUARD Plastic double guard
PEDALS Wellgo FP-7 alloy hi-impact body, foldable, 9/16" axle
CHAIN KMC Z9000, 1/2"x11/128"x116 links
TIRES Kenda F:20"x 1.5" R:20"x1.75"
RIMS HJC DA-17 alloy Double F:20"x1.50" 14Gx24H   R:20"x1.50 32H CNC
SPOKES & NIPPLES 14G*56  pcs,45#stainless  braze nipples
FRONT HUB Quando KT-MD7F ( disc front hub )
REAR HUB Quando KT-TR8R ( rear disc hub )
R/DERAILLEUR Sun Race RDM97-LD ( Long cage )
SHIFTER(S) Sun Race DLM93-9R ( trigger shifters )
Cassette Sun Race 11-32
FRONT BRAKE Tektro MINI-10  V-Brake 55MM shoes
REAR BRAKE (I) Tektro MINI-10 V-Brake 55MM shoes
BRAKE LEVERS Tektro RS392A, alloy levers w/alloy black clamp

9FS Features Video

9FS Folding and Unfolding Video


18 Reviews Hide Reviews Show Reviews

  • 5
    Great bikes!

    Posted by George Irwin on Mar 22nd 2018

    These are some great bikes. High quality build. Fit and finish is excellent throughout. You get a lot for what little these bikes cost!

  • 5

    Posted by Cale on Mar 8th 2018

    Have had a few decent sized rides with the 9FS and so far I love it! Rides nice, fits nice, looks nice, feels nice. Seems to have well built components and frame.
    Thank you very much as this particular style bike is hard to find.

  • 5
    Fiesta time

    Posted by Rick Ogston on Mar 8th 2018

    I rode my bright yellow 9FS for the first time last night in downtown San Antonio. It's Fiesta time and everyone was out celebrating. All eyes, however, turned to me and my new bike when I approached a crowd. Policeman included asked about the bike and were interested. I really like it! It rode nicely even over the rough downtown streets, suspension helping a great deal. I'm really happy with this bike! First ride was great!! Can't beat the quality, particularly for the price. Thanks, Yan!

  • 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.