8S: Front Suspension 8 speed Folding Bike

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bike standing drive side at the beach

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 8S, 8 speed front suspension commuter folding bicycle! It shares the same frame and fork as our top selling 9S. It is the super comfortable due to the front suspension which is preload adjustable. 

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 8S 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 lightweight aluminum frame & rack,  plastic rear fender, kickstand, and removable frame protector.

We also offer standard upgrades 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 16 or 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. 


  • Heavy Duty rear rack
  • Kickstand
  • Rear Fender
  • Front derailleur braze-on will allow one to turn it into a 24sp bike.
  • Head tube and seat tube interface for bags, pumps, or battery packs
  • Angle adjustable stem
  • Microshift 8sp drivetrain w/trigger shifters
  • Lighter fork with aluminum lowers and crown
  • Preload adjustable trans-arch suspension fork
  • Rear disc tabs
  • Lightweight and easy to fold right pedal ( left non folding )
  • Aluminium frame
  • Lowest price 8-speed suspension commuter 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
  • 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. 
  • Bell to alert pedestrians and cars
  • Soft foam 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
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
CRANK Prowheel
PEDALS VP FLD-50 L/R hi-impact body, foldable right pedal, 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
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 8-speed Gripshift
Cassette MICROSHIFT CS-H091 ,8 sp, index,11-32T
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



8S Folding and Unfolding

8S Features



2 Reviews Hide Reviews Show Reviews

  • 5
    Downtube 8S an awesome bike

    Posted by Tom Bartlett on Jun 26th 2017

    After several days of researching folding bikes I kept coming up with peoples recommendations to check the Downtube website. I was shopping for myself and my wife and the 8S had lots of great features. All the adjustments to the handlebars as well as the bar ends really sold us. That and the 8 speeds, rear rack, and fender. The chat area seemed to always be open for advice and help with the order....even late in the evening. So I ordered 2 bikes on a Thursday night....by 8am I had notification of shipment.......and I then changed the pickup location on the UPS website so I could pick them up at a local UPS store rather than worry about them being delivered out in front of the house. One of the boxes was in great shape.....the other was missing one of the straps and had a couple holes. One of the holes was right at a wheel axle but the bike has some heavy rubberized guards on those axles for protection so no harm done. The other hole was around the end near a pedal and nothing was hurt. In all the packaging was well done, the only problem was one front reflector that didn't make the trip. I didn't have to do any tweaking to the brakes or shifting mechanism, everything works smoothly and it's a great looking bike. We aren't all that into bicycling but want the versatility of the folding bikes to go camping or the other side of town without a big rack to worry about. Of course that means that you have to be willing to fit yourself to the bike rather than have a bike fit to you but we are getting used to any idiosyncrasies. The 8S has so many nice touches for a great price compared to all the other bikes we looked at. I did find out that you should wait until after the bike comes to accessorize since the smaller size dictates what you can buy. I bought too tall a water bottle.....no big deal. We are very pleased with the support we got from Yan and would definitely recommend Downtube products to anyone!

  • 5
    8S Bike Review

    Posted by K Pierce on Apr 22nd 2017

    Purchased two 8S Front Suspension 8 Speed Folding Bikes and they arrived a few days later after shipping from the East Coast. Neither bike required any adjustments other than the seat and handle bar height. Both bikes shift easily through their range and are great on short hills and paved roads. I would definitely recommend these bikes to others, KP