SONDORS Fold XS Review

Sondors Fold Xs Electric Bike Review
Sondors Fold Xs
Sondors Fold Xs Air Suspension Fork 80mm Travel
Sondors Fold Xs Tektro Auriga E Sub Hydraulic Disc 180mm Rotor
Sondors Fold Xs Wellgo Folding Pedals Alloy Derailleur Guide Stainless Steel Chain
Sondors Fold Xs Shimano 1x7 Freewheel Steel Derailleur Guard
Sondors Fold Xs 750 Watt Bafang Rear Hub Motor
Sondors Fold Xs Selle Royale Gel Saddle Suspension Seatpost
Sondors Fold Xs Cockpit View Slight Swept Back Handlebars
Sondors Fold Xs Control Pad Color Lcd Display
Sondors Fold Xs Ergonomic Locking Grips Shimano Grip Shifter
Sondors Fold Xs Tektro Auriga E Sub Four Finger Levers
Sondors Fold Xs Folded Side View
Sondors Fold Xs Folded Vertical View
Sondors Fold Xs Stock High Step Graphite
Sondors Fold Xs Stock High Step Torch
Sondors Fold Xs Electric Bike Review
Sondors Fold Xs
Sondors Fold Xs Air Suspension Fork 80mm Travel
Sondors Fold Xs Tektro Auriga E Sub Hydraulic Disc 180mm Rotor
Sondors Fold Xs Wellgo Folding Pedals Alloy Derailleur Guide Stainless Steel Chain
Sondors Fold Xs Shimano 1x7 Freewheel Steel Derailleur Guard
Sondors Fold Xs 750 Watt Bafang Rear Hub Motor
Sondors Fold Xs Selle Royale Gel Saddle Suspension Seatpost
Sondors Fold Xs Cockpit View Slight Swept Back Handlebars
Sondors Fold Xs Control Pad Color Lcd Display
Sondors Fold Xs Ergonomic Locking Grips Shimano Grip Shifter
Sondors Fold Xs Tektro Auriga E Sub Four Finger Levers
Sondors Fold Xs Folded Side View
Sondors Fold Xs Folded Vertical View
Sondors Fold Xs Stock High Step Graphite
Sondors Fold Xs Stock High Step Torch


  • The Fold XS is a powerful and capable fat tire folding Ebike from SONDORS, coming in two eye-catching colors and covered by a one-year comprehensive warranty
  • Highly satisfying to ride thanks to the powerful 750 watt hub motor and excellent cadence sensor tuning, hydraulic braking system from Tektro is smooth, powerful, and very easy to actuate with four-finger levers
  • Capable of tackling any terrain with CHAOYANG fat tires, air front suspension, and a suspension seatpost, the battery is constructed with high-quality LG 3500 cells and offers a sizeable 672 watt-hours of capacity
  • Like all fat tire Ebikes, it is still heavy and unwieldy when folded, no accessories are included which helps to keep the cost low but means extra expense and work to add your own, Shimano Tourney is a basic but reliable derailleur

Video Review





Fold XS



Body Position:


Suggested Use:

Cruising, Neighborhood, Sand and Snow, Trail, Urban

Electric Bike Class:

Throttle on Demand (Class 2)
Learn more about Ebike classes


1 Year Comprehensive


United States, Canada, Europe

Model Year:


Bicycle Details

Total Weight:

68.9 lbs (31.25 kg)

Battery Weight:

7.5 lbs (3.4 kg)

Motor Weight:

10.1 lbs (4.58 kg)

Frame Material:

Aluminum Alloy

Frame Sizes:

15.5 in (39.37 cm)

Geometry Measurements:

Unfolded Dimensions: 15.5" Seat Tube, 27" Reach, 26" Stand Over Height, 34" Minimum Saddle Height, 26" Width, 64" Length

Frame Types:

Folding, High-Step

Frame Colors:

Torch, Graphite

Frame Fork Details:

Air Suspension Fork, 32mm Steel Stanchions, 45mm Travel, Pressure Adjust with Lockout, 135mm Hub Spacing, 9mm Axle with Nuts

Frame Rear Details:

175mm Hub Spacing, 12mm Threaded Axle with Nuts

Attachment Points:

Fender Bosses, Rear Rack Bosses, Bottle Cage Bosses

Gearing Details:

7 Speed 1x7 Shimano Tourney, MF-TZ500-7 14-28 Tooth Freewheel, Shimano Tourney Derailleur

Shifter Details:

Shimano RevoShift Half-Grip Twist on Right


Lasco, Forged Aluminum Alloy, 170 mm Length, 48 Tooth Steel Chainring with Alloy Guide


Wellgo, Plastic Platform, Folding


Integrated, Sealed Cartridge Bearings, 1-1/8" Straight


Aluminum Alloy, Folding Telescoping Height Base 270mm to 400mm


Aluminum Alloy, Low Rise, 660mm Width

Brake Details:

Tektro Auriga E-SUB Hydraulic Disc with 180 mm Rotors, Four-Finger Levers with Motor Inhibitors


Ergonomic Rubber, Locking, Dark Grey


Selle Royale Gel

Seat Post:

Exoform 625 Suspension (30mm Travel, Preload Adjustment Bolt in Base), Aluminum Alloy, Quick-Release Skewer

Seat Post Length:

260 mm

Seat Post Diameter:

27.2 mm


Aluminum Alloy, Double Wall, 36 Hole, Black


Stainless Steel, 13 Gauge Front, 12 Gauge Rear, Black with Silver Nipples

Tire Brand:

Chaoyang, 20" x 4.0" (98-406)

Wheel Sizes:

20 in (50.8cm)

Tire Details:

5 to 20 PSI, 0.4 to 2.1 BAR

Tube Details:

Schrader Valve


Rear-Mount Adjustable Kickstand, Steel Derailleur Guard, Velcro Protector and Magnet Clasp for Folding


Locking Removable Main-Tube Integrated Battery Pack, 1.4 lb 3 Amp Charger, Folding Frame, Internal Cable Routing, 42 Volt 20 Amp Controller, Rust Resistant Stainless Steel Chain

Electronic Details

Motor Brand:


Motor Type:

Rear-Mounted Geared Hub
Learn more about Ebike motors

Motor Nominal Output:

750 watts

Motor Peak Output:

1000 watts

Motor Torque:

80 Newton meters

Battery Brand:

LG 3500

Battery Voltage:

48 volts

Battery Amp Hours:

14 ah

Battery Watt Hours:

672 wh

Battery Chemistry:


Charge Time:

5 hours

Estimated Min Range:

30 miles (48 km)

Estimated Max Range:

50 miles (80 km)

Display Type:

SONDORS Branded Bafang DCP-18, Fixed, Backlit, 3.25" Color LCD, USB Type A Charging Port on Right Side (5V 1A)


Battery Percentage, Current Speed (With Infographic), Power Meter, Trip Distance, Odometer, Max Speed, Avg Speed, Trip Time, Assist Level (0-5)

Display Accessories:

Independent Button Pad on Left, Buttons: +, i, -, Walk, Settings: Hold + and -, Deep Settings: Hold i and -

Drive Mode:

Cadence Sensing Pedal Assist, Trigger Throttle (12-Magnet Cadence Sensor)

Top Speed:

20 mph (32 kph)(Capable of 28mph with modification)

Written Review

To run the forums, host the website, and travel, I charge a universal service fee for my reviews. This in-depth review was sponsored by SONDORS. My goal is to be transparent and unbiased with you, this video and writeup are not meant to be an endorsement of SONDORS products. I welcome your corrections, additions, and feedback in the comments below and the SONDORS electric bike forums.


  • SONDORS is a well-known name in the Ebike space, the first SONDORS Ebike was crowdfunded and received an enormous amount of publicity due to the amount raised and the bold claims made of producing an Ebike that would only cost $500. To the surprise of many SONDORS was successful in producing and shipping that first model, and in the years since they have transitioned to a more typical company structure with many different models available and a proper support team.
  • The SONDORS owner community tends to express a lot more excitement and pride of ownership than most, and one of the big interests of this community is modifying and upgrading their bikes. One of the ways SONDORS is able to keep prices so low is that their bikes don’t include any accessories, and while you can add these on for an extra cost when buying from SONDORS, many owners prefer to add on the exact accessories they want from a third party or to make their own DIY solution. If this sounds interesting, you can find lots of online communities to get inspiration and help from other owners!
  • The Fold XS is a Class 2 electric bike which means the motor can be activated by the thumb throttle on the right grip, or by pedal assist via the 12-magnet cadence sensor. The motor is powerful enough to handle Class 3 speeds of 28mph, but Ebike rules in most locations will require you to disable the throttle and only use pedal assistance at that speed. SONDORS support can help with making these modifications and I believe they also provide Class 2 and Class 3 stickers with the Fold XS when it is shipped


  • SONDORS recently expanded their warranty to a full year of comprehensive coverage, a welcome change as their previous warranty was only good for 30 days
  • The Fold XS is a large folding bike with a rock-solid frame, it feels stable and capable at high speeds and while riding off-road
  • Beautiful appearance, SONDORS has done an excellent job with cables being internally routed and bundled well, both paint options are eye-catching and blend well with component colors and SONDORS branding
  • Ride comfort is excellent thanks to the full suspension setup, up front is an adjustable air suspension fork with 80mm of travel, and in the rear the suspension seatpost adds another 30mm of travel. This setup combined with the 4″ fat tires from CHAOYANG makes for a great ride experience whether you are cruising on asphalt or tackling rough terrain, and you can drop the tire pressure down to 5psi for sand and snow (check the video review for a beach test!)
  • Continuing with ride comfort, you also get locking ergonomic grips and the gel saddle from Selle Royale, and the seating position is relaxed and upright, even for someone as tall as me at 6′ 3″. SONDORS didn’t skimp on the length of control cables so you can raise the telescoping stem fairly high up
  • Fantastic stopping power from the Tektro Auriga E-Sub setup, these are Ebike-specific hydraulic disc brakes with 180mm rotors in the front and rear, plus the large four-finger levers provide great mechanical advantage making these brakes extremely easy to actuate
  • A better-than-average charging experience thanks to the 3 amp charger which will charge faster than the 2 amp chargers that are standard for most Ebikes, and the charge port is positioned high up near the front of the frame where it is less at risk for damage when charging while the battery is still inside the bike frame. This is compared to some Ebikes that have the charge port located near the crank arms. Of course, you can also remove the battery from the frame and charge it off the bike, recommended for convenience and battery longevity if you store your Fold XS outdoors or in your garage
  • Simply massive amounts of power from the 750 watt Bafang rear hub motor, this is already a powerful motor and on the Fold XS it receives a mechanical advantage from the smaller-diameter 20″ wheels. This motor is able to tackle sand and steep hills without breaking a sweat, and the burst of power from activating the throttle is very satisfying
  • This Ebike uses a cadence sensor for activating pedal assistance. On most Ebikes, this means a delay when starting pedaling, but to my surprise, the Fold XS responds almost instantly! SONDORS has really found a sweet spot with their sensor tuning, with the motor kicking in almost as quickly as it does on a torque-sensing setup
  • The battery is high capacity at 48 volts and 14 amp-hours, secured and protected inside the main tube, and built with quality LG 3500 cells
  • SONDORS has upgraded the chains on all of their 2020 models to use stainless steel chains, great for durability and rust resistance – especially if you like to ride on the beach!
  • The display is a large color LCD with good informational readouts and the advanced settings menu is much easier to navigate than most displays, I also appreciate the throttle configuration which allows for full-throttle power form any assist level. This display is not removable but it is adjustable angle so you can find that sweet spot to reduce glare. As a nice bonus, the display has a USB type A charging port on the right side, and it’s a full amp of power (meaning it can charge iPhones as well as Android)
  • A fairly obvious point for a folding bike, but… it does fold! Folding is great for both portability and for storage, and you also get a velcro protective cover for the front fork to keep it from getting scratched while folded, as well as a magnet mechanism to help hold the bike shut in the folded position
  • Shimano’s RevoShift half-grip shifter is intuitive to use and shifts smoothly, making it easy to shift a lot of gears quickly. This is a 1×7 setup using Shimano’s basic but reliable Tourney derailleur, a steel derailleur guard protects both the derailleur and the motor cabling, and a double-sided alloy bash guard keeps the chain securely on the chainring (as well as keeping clothing and debris out of the chain)
  • The kickstand is rear-mounted which prevents “pedal lock”, something that occurs with center-mounted kickstands that can become locked up with the crank arms. It is also adjustable length with a wide base that helps out when parking on soft terrain


  • You only have one frame size to work with which means this may not be a good fit for some riders. The telescoping stem and quick-adjust handlebars make it easy to find that sweet spot, and even as a tall rider I found the fit to be pretty comfortable… with the exception of not being able to get full leg extensions, but I haven’t found a folding bike yet that can accomodate my long legs
  • SONDORS is direct-to-consumer with no dealers, so your only option is to order online without being able to test-ride first, and you will have to do at least some assembly to get ready to ride… which can be daunting if you don’t have the required knowledge or tools. Of course, this means that you save a lot of money without the dealer overhead, and there are numerous online communities of SONDORS riders that can offer advice for both first-time setup and maintenance, as well as SONDORS official support
  • SONDORS ships all of their bikes without any additional accessories such as lights or racks, the idea here is that this keeps the cost as low as possible, and allows riders who do want accessories to get the exact ones they want. I think that is a good way to do it, just keep in mind that you’ll have to pay extra for any accessories you do want, and you lose out on the convenience of having your lights wired into the main battery, unless you want to dive deep into modifying your Fold XS… which you just might want to do as that is very popular with SONDORS bikes! The Fold XS does have plentiful mounting points for fenders, racks, and even bottle cages so it will be easy to add all sorts of accessories
  • The CHAOYANG tires feel amazing to ride on, but they don’t include any puncture protection, and I highly recommend adding some of your own since fat tire flats on an Ebike are not pleasant to repair! The tires also don’t have any reflective striping on the sidewalls, which is a minor thing but I would like to see some for safety
  • The cadence sensor is not sealed which leaves it more vulnerable to getting bent or magnets knocked out, keep in mind this is a pretty rare occurrence but something to keep in mind and check on if your pedal assistance is ever behaving strangely
  • The gearing range on the freewheel is 14-28 tooth which is a fairly small range and limits how steep of hills you can tackle while pedaling, of course, this is alleviated by the massive amounts of power from the 750 watt motor. The Tourney derailleur is entry-level from Shimano and not as fancy or smooth as some of their higher tier options, but it’s still a solid-performing derailleur and I think it fits well for the Fold XS use case
  • Very large and heavy at 68.9 pounds, and fairly difficult to maneuver when folded. Keep in mind that this is a pretty standard weight for a fat-tire-folder, and the included magnet mechanism helps with maneuvering while folded… but this still isn’t an Ebike that you can fold up and take on the bus or subway
  • The display is not removable which means possible damage if you leave it out in harsh weather or locked at a bike rack, and it can be difficult to see some readouts in bright sunlight. You can adjust the angle which helps to alleviate this

Useful Resources:

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