8FS at the Grand Canyon

8FS: Full Suspension 8sp Folding Bike

  • Product Description

    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 8FS (8 speed full suspension) folding bicycle! It is finally here and many people are pleased and we think you will be too! It shares the same frame and fork as our top selling 9FS. It is the most comfortable bike we sell due to the front and rear suspension. The suspension is preload adjustable in the front and rear.

    You can take this bike on long rides without needing any more than eight speeds! The bike’s build quality is amazing and solid as a rock! The wide handlebars make it easier to maneuver, and the angle adjustable stem allows a custom fit for both tall and short riders. 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 8FS bike 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 Microshift, which we added. In addition to the top notch frame with comfortable suspension, we added many 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.

    We also offer standard upgrades for free such as the headtube bag interface pump interface, and water bottle braze-on, but pump and cage are not included.

    AND that’s not all!

    With its adjustable suspension, it is so much easier to go up the hill. It also comes with a front derailleur braze-on with cable routing, which allows you to easily turn this bike into a 24 speed bicycle in a snap. The angle adjustable stem, and bar ends are a great addition to allow an easily customizable fit.

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



    • 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
    • Angle adjustable stem
    • Upgraded Microshift 8sp drivetrain w/trigger shifters
    • Upgraded brakes, levers, and brake noodle
    • Lighter fork with aluminum lowers and crown
    • Upgraded cable housing
    • Upgraded kickstand interface ( kickstand not included )
    • Cold forged cranks
    • Preload adjustable trans-arch suspension fork
    • Rear disc tabs
    • Lightweight and easy to fold pedals
    • Aluminium frame
    • Lowest price 8-speed full suspension folder in the world…most others cost over $1,000!
    • 24H/28H spoked front/rear wheels for light weight
    • thinner 1.5" front tire for low rolling resistance
    • Stainless Steel spokes
    • Upgraded brake levers
    • 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!)
    • 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
    • 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
    FRAME Downtube Aluminum frame and swingarm
    SHOCK HLT-400-1 850B *100L
    FORK HL Corp.#510 suspension fork 20"
    HANDLEBAR HL Corp. MTB-AL-100PP,alloy , W: 560, 22.2*25.4
    Kalloy AS-820 alloy 28.6*25.4 E:90 H:35L adjustable
    BAR ENDS Kalloy BE-21 alloy φ22.2 W/φ16 L:80mm
    GRIPS Cionlli
    SADDLE Cionlli
    SEAT POST HL Corp. SP-214 alloy φ30.4*500mmL
    SEAT PIN Yen Yue
    CHAINWHEEL Prowheel
    CRANK Prowheel
    CHAIN GUARD Prowheel
    PEDALS VP FLD-50 L/R hi-impact body, foldable, φ9/16" axle
    CHAIN KMC Z82, 1/2"*3/32"*112 links
    TIRES Kenda F:K-193, 20"*1.5" R:K-935 20"*1.75
    TUBES Kenda
    RIMS HJC DA-18 alloy Double F:20"*1.50" 14G*24H R:20"*1.50 28H
    SPOKES & NIPPLES Shun Lih 14G*72 pcs,45#stainless braze nipples
    FRONT HUB Quando KT-AP5F alloy 14G*24H*M9" QR
    REAR HUB Quando KT-AYER alloy 14G*28H E:41 M10*135*145 QR
    SHIFTER(S) MICROSHIFT DN85-8/R 8-speed
    FREEWHEEL MICROSHIFT CS-H091 ,8 sp, index,11-34T
    FRONT BRAKE Apse L207D, alloy linear spring V-brake, brake shoe - 55mm
    REAR BRAKE (I) Apse L207D, alloy linear spring V-brake, brake shoe - 55mm
    BRAKE LEVERS Apse 428D-1, alloy levers w/alloy black clamp
    OUTER CAGING N-state
    REFLECTOR (FT) Sate-Lite
    REFLECTOR (RR) Sate-Lite
    REF. BRACKET(S) Jie Li

    8FS Folding Bike Features




    8FS Folding and Unfolding

  • Product Reviews


    Write A Review

    1. Best $299 bike EVER!

      What can I say0 I have TWO Downtubes. I LOVE THEM. on Feb 8th 2017

    2. Zoom zoom, It fits in a miata.

      The bug in the shipping process is that Downtube doesn't give us tracking numbers, but the bike arrived in 5 working days, and UPS contacted me by email the day prior to delivery.

      Assembly was easy, but bikes are one of my hobbies in retirement. I noted that the folding stem was off center, so I loosened the quill but and put it straight. The steerer tube is threaded too, and I chose to tighten it a bit. The tricky stuff like brakes and derailleur? Nothing needed. The brakes and shifter work beautifully out of the box, better than any of the other five bikes in my garage, Apartment dwellers w/o tools might have their new downtubes checked out at a bike shop.

      It wasn't mentioned on the website, but the frame has lugs for mounting front/rear disk calipers,. Not that they're needed, for the speeds most people ride. The rim brakes work very well.

      It weighs 33 pounds per my scale. And I'm 5 pounds heavier in the five weeks since Xmas, but I've had a bad cold, so I haven't ridden a bike in that time. Today's first ride on the Downtube was my first physical effort in a long time. Whoa, I an out of bike shape.

      I only rode a mile. It's very comfortable. I hit some pot holes to make sure.

      Without my bike computer, I had no idea of speed, but the bike is faster than me at the moment. Maybe when I get my legs back in the Spring, I can push the top two gears. People say folders are twitchy? This felt quite stable to me.

      So my early impressions are very good. The bike looks great too. I'm shallow. Looks matter.

      on Jan 21st 2017

    3. Good Bang for the Buck for My Purposes

      I'm not a bike expert but I am quite satisfied with the 8FS.
      Bought this bike for casual recreational cycling.
      My observations after owning 2 weeks are as follows:

      Fast seamless delivery.
      Fairly easy and minimal assembly
      Great quality for the price.
      Looks pretty cool, modern and 'hip'.
      Rides very nicely with the the front/rear suspension.
      Seat is comfortable for me. (Apparently some owners change the seat however.)
      Gears work fine.
      Not exactly ultra light-weight for a folding bike but acceptable I guess.
      Compact - Fits into my mid-size SUV with tons of room to spare.
      My rear brake needed adjustment as it was rubbing agains wheel.
      Folds ok.
      Good customer communication service with the Downtube company.

      So, overall I'm pretty impressed with the 8FS. I think it was a good investment for my situation.

      If you purchase, I highly suggest bringing your new 8FS to a bike mechanic immediately after assembly for a safety check, minor adjustments and peace of mind. I did this and it ran even smoother after it got the professional once-over.

      Tip -
      Surprising to me.....my bike mechanic said that the 8FS bicycle chain did not need to be oiled/greased when I brought it to him after assembly. Apparently the chain already comes coated with a special wax.

      Good luck with your research!
      It sure pays to do your homework when purchasing a folding bike.

      on Jan 19th 2017

    4. Best bike for the money

      I found this manufacturer by accident while looking for reviews of other bikes. I was surprised how reasonable the price was for a light weight alloy bike with good quality components. I need the bike in a rush fora trip and they shipped right out. compartment. The full suspension gives it a soft ride nice for us old guys. Everything was adjusted and worked great, no fussing with derailleurs, shifters, or brakes! Fit nicely in the motor home storage. It does not come with a kick stand and they were out of stock at Downtube but the local bike shop had an EVO adjustable one that works fine. I'm still learning how the 20" wheels handle, watch the slow speed sharp turns! They do allow you to get going very fast which is nice. I have to add I've been riding a recumbent "tadpole" style trike for the last 10 years but it is a pain to take with the motor home. Some reviewers had trouble with the main latch pin. Having read that I sprayed both with silicone spray right out of the box and they both worked fine. Bottom line don't pass this up if your looking for a high quality folding bike that doesn't break the bank from a company that has outstanding customer service. on Dec 3rd 2016

    5. Loving my purchase!!

      I was hesitant to spend so much on something like this online, but I'm glad I took the risk! I've been wanting a bike for awhile but never went through with buying one bc of storage issues. When I found out there were folding bikes in my price range, I thought it would be fun to finally buy one. This bike suits my needs very well. I mostly use it for pedaling around my college campus. It's small and maneuvers well around people and pathways. I can pedal very slowly and still stay upright with the lower gear settings. It's also performing well on the hillier bits of campus and the bumpier stretches of road. It's easy to shift and pedal and the small size gives it a certain element of safety in busy places and at crosswalks. It also folds small enough to fit in the trunk of my mid size sedan, where it stays most the time. This bike is sleek, comfortable, sturdy and feels well made. (Had it about a week and been riding everyday)

      The reason I gave the bike only 4 stars is the ease of folding. I was frustrated at first with the difficulty in folding and unfolding. I have now gotten the hang of it, when opening, I have to use my weight as leverage to get the lock to shut, and when shutting I have to use a small object (I've been using a car key) to pop the latch back out. (This probably isn't such a bad thing overall bc it seems like it would be almost impossible for the bike to collapse while riding.) The bike is heavy and shifty and doesn't seem to lock in the folded position, so moving it around can be bothersome. Since I can easily latch up the unfolded bike to any rack around campus, this hasn't really been a problem. However I would not recommend this for an older person or someone planning to fold it up and port it around by hand.

      Maybe there is a way to lock it shut, which is another complaint I have, the bike came with almost no instructions and tells you to check you tube for details.

      One more thing to take into consideration is that I am about 200lb and it's seems just about at the weight limit for this bike. Still, it rides great for me.

      All in all for the price this bike serves its purpose and has been a helpful and fun asset to my everyday wanderings. I can't wait to take it to the beach and Cyclavia!
      on Oct 17th 2016

    6. Sweet ride

      I received my 8 ft on Friday 9/2/16, pretty simple set up. I didn't care for the saddle so replaced it with my own. Rode git Saturday and enjoyed the ride gearing is a little lower than expected but still a fun bike to ride. I love the color.I previously owned a down tube 9 which I purchased in 2005, I hope the weld in the front gold down is better, it looks like it was beefed up compared to my 9. Still a great bike for the money. I have been riding for 68 years and hope to get in a few more. on Sep 4th 2016

    7. Love my bike!

      Never had a folding bike, but this bike rocks! Materials are high quality and the full suspension make the ride very smooth around our nation's capital. Definitely recommend this bike to all those that are looking for an alternative commuting option. The bike will for itself in about three months! on Jul 31st 2016

    8. I'm in love with this bike!

      Perfect bike for the price. Great build quality and rides so smooth on bumpy roads. It's surprisingly quick and handles well. I love riding this bike, makes me feel like a kid again.
      on Jul 31st 2016

    9. It fits in my car!

      I have a Smart car, which is as small as they come. And I was so glad to discover that the 8FS fits in the very tight space behind the seats. I emailed DOWNTUBE/Yan a photo to prove it, and it's now included in the photos here. See above. I am very happy with the bike. Other than the seat--which I immediately replaced--the bike is everything I wanted. on Jul 31st 2016

    10. Great bike!

      My bike arrived in less than a week. I've never owned a folding bike, but it was pretty simple to figure out the folding and unfolding after following the links here to the videos online. I brought it to the bike shop for the initial set up, and I was good to go. Due to the full suspension, the ride was very smooth on my test drive; and the gear shifting was smooth, too. Seat and handlebars adjust easily. It seems to be a fine bike so far. It's sturdy, and it looks cool, too. I look forward to using it a lot as soon as winter's over here in Minnesota (so, yeah, around June). on Jul 31st 2016

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