FLEX
Digital User Manual
Battery (integrated)
Charger
Pedals
Bell
Front & Rear Reflectors
Tools Kit
Save $100
750W/75Nm
Motor Power
28 MPH
Top Speed
70 Miles
Max Range
440 Lbs
Max Payload
20"x3.0"
Tire Size
Torque Sensor
Sensor
750W/75Nm
Motor Power
28 MPH
Top Speed
70 Miles
Max Range
440 Lbs
Max Payload
20"x3.0"
Tire Size
Torque Sensor
Sensor
FLEX
Flex Your Routine
Sale price$999.00Regular price
$1,099.00
US Stock, Order Today, Receive Before April 19, 2026
Pair Well With
750W/75Nm
Motor Power
28 MPH
Top Speed
70 Miles
Max Range
440 Lbs
Max Payload
20"x3.0"
Tire Size
Torque Sensor
Sensor
30-Day Trial
2-Year Warranty
Free Shipping to the Lower 48
Ship from USA.
FLEX
Mountain Gray / One Size
Sale price$999.00Regular price
$1,099.00
The Ultimate Folding Utility Ebike
Meet the Hynox Flex—the ultimate fusion of heavy-duty capability and urban agility. it is your high-performance companion for daily errands and road trips.
Ergonomic Design for Maximum Comfort
The step-through frame allows effortless mounting and riding confidence for riders of all levels. The upright geometry promotes a natural posture that relieves pressure on your wrists and shoulders. Paired with an 8.6” wide memory foam saddle, it delivers exceptional cushioning and support for long, pain-free rides—so you can explore farther and longer in complete comfort.
Superior Braking Power
Featuring Logan hydraulic disc brakes with dual-piston calipers. The heavy-duty 180mm x 2.3mm rotors provide exceptional durability and heat dissipation, ensuring reliable, consistent braking performance even under the max. load of 440lbs.
Compact Folding for Effortless Transport
The perfect blend of full-sized power and go-anywhere portability. Folded to a compact 40” x 19” x 29”, this bike fits seamlessly into car trunks for road trips and tucks away for space-saving home storage.
Integrated Rear Rack with 120 lbs Capacity
Built for heavy-duty utility, the frame-integrated rear rack offers superior structural integrity for your heaviest hauls. With a massive 120 lbs load capacity, it effortlessly transforms your ride into a compact cargo bike. Whether you’re securing grocery panniers, installing a child seat, or loading up weekend gear.
Shimano Altus 8-Speed
Experience professional-grade precision with the Shimano Altus derailleur, engineered for faster shifting and superior stability across any terrain. This reliable drivetrain ensures smooth, crisp gear changes under pressure, giving you the confidence to conquer steep climbs and rugged trails with ease. It’s the perfect blend of durable performance and effortless control for every adventure.
ARISUN Puncture-Resistant Tires
Conquer every landscape with ARISUN 20”x3.0” all-terrain tires, engineered for peak performance and peace of mind. Featuring the advanced 3mm HIPPO SKIN+ puncture protection, these tires offer industry-leading durability and a high-traction tread for superior grip.
Hynox App
Connect your ride with the Hynox App for total control via Bluetooth. Seamlessly power your bike on or off, toggle lights, and precision-tune your performance by setting custom speed limits for each PAS level and the throttle. With automatic ride tracking and OTA firmware updates, your bike stays smarter and more optimized with every sync.
120lbs Integrated Rear Rack
Engineered as an integral part of the frame, this high-strength rear rack offers unmatched structural integrity and a massive 120lbs (55kg) load capacity. It features pre-drilled mounting points designed for seamless compatibility with a wide range of accessories, including large baskets, child seats, and panniers. Whether you are hauling heavy groceries or gearing up for a long-distance touring adventure, this rack provides the ultimate stability and versatility for every journey.
KMC Chain
Engineered for maximum durability and high-strength performance, this drivetrain delivers efficient power transfer and precise, dependable shifting. The chain features a corrosion-resistant coating that protects against rust and wear, helping it perform reliably in wet, dusty, or demanding conditions.
EXSHO 60mm Front Suspension
Tame the urban grid with the EXSHO suspension fork, packing 60mm of travel. Built with a rugged, high-strength chassis, it’s engineered to aggressively soak up potholes, curb drops, and rough pavement.
Ergonomic Saddle
The 8.6" wide high-density memory foam saddle delivers an elite riding experience, blending firm support with ultimate comfort. Its expansive surface area is specifically engineered to alleviate pressure, ensuring a premium, pain-free journey even on the longest rides. Experience a seat that supports your posture and invites you to explore further in total relaxation.
Comparison Models
Pearl White / One Size
Sale price$999.00Regular price
$1,099.00
Ruby Red / One Size
Sale price$1,199.00Regular price
$1,299.00
Sapphire Blue / One Size
Sale price$1,399.00Regular price
$1,499.00
Pearl White / One Size
Sale price$999.00Regular price
$1,099.00
Ruby Red / One Size
Sale price$1,199.00Regular price
$1,299.00
Sapphire Blue / One Size
Sale price$1,399.00Regular price
$1,499.00
Power
750W, Peak 1300W
750W, Peak 1400W
750W, Peak 1600W
Power
750W, Peak 1300W
750W, Peak 1400W
750W, Peak 1600W
Max Torque
75Nm
85Nm
100Nm
Max Torque
75Nm
85Nm
100Nm
Battery
48V 13Ah 624Wh, 18650 Cell
48V 15Ah, 720Wh, 21700 Cell
48V 15Ah, 720Wh, 21700 Cell
Battery
48V 13Ah 624Wh, 18650 Cell
48V 15Ah, 720Wh, 21700 Cell
48V 15Ah, 720Wh, 21700 Cell
Max Range
70 Miles
65 Miles
65 Miles
Max Range
70 Miles
65 Miles
65 Miles
Front Fork
60mm Coil Suspension
80mm Hydraulic Suspension
80mm Hydraulic Suspension
Front Fork
60mm Coil Suspension
80mm Hydraulic Suspension
80mm Hydraulic Suspension
Rear Suspension
No
No
DNM 35mm Air Suspension
Rear Suspension
No
No
DNM 35mm Air Suspension
App
APP Connect
App Connect
APP Connect
App
APP Connect
App Connect
APP Connect
Sensor
Torque Sensor
Torque Sensor
Torque Sensor
Sensor
Torque Sensor
Torque Sensor
Torque Sensor
Max Load
440 lbs
440 lbs
400 lbs
Max Load
440 lbs
440 lbs
400 lbs
Rear Rack Payload
120 lbs
66 lbs
66 lbs
Rear Rack Payload
120 lbs
66 lbs
66 lbs
Total Bike Weight
66 lbs
72 lbs
77 lbs
Total Bike Weight
66 lbs
72 lbs
77 lbs
Specification & Geometry
Size Guide
Bike Size：One Size
User Height Range：5' ~ 6'4''
Bike Folded: 40'' x 19'' x 29''
Frameset
Frame: 6061 Aluminum Alloy
Fork: EXSHO 60mm Travel Coil Suspension with Lock-out
Electronics
Motor: 48V, 750W(Peak 1300W), 75Nm
Battery: Removable 48V, 13Ah, 624Wh, IPX6
Cell: 18650 2600mAh Cell
Charger: 48V, 2.0A Fast Charger
Display: 3.5" Full Color, High Brightness, Bluetooth, Adjustable Angle
Sensor: Torque Sensor
USB Port: USB Type-C Phone Charge
Throttle Assist: Trigger-Control, Removable
Pedal Assist: 5 PAS Levels
Walk Mode: 2.9 MPH
Headlight: 12V/3.5W 70 Lux Integrated LED, Adjustable Angle
Taillight: Braking Highlight,Turn Signal
Speed & Range
Top Speed (Default): 20 MPH
Top Speed(Unlocked): 28 MPH
Class: 1/2/3
Throttle Range: 55 Miles
Pedal Assist Range: 70 Miles
(A 188 lbs rider using PAS 1 on flat roads.)
Drivetrain
Chainrings: 48T
Crankset: Aluminum Alloy, 170mm
Freewheel: 8-Speed, 11-32T
Chain: KMC 8-Speed
Rear Derailleur: SHIMANO Altus 8-Speed
Shift Lever: SHIMANO Altus 8-Speed
Brake
Brake: LOGAN Hydraulic Disc Brakes
Rotors: 180mm Diameter, 2.3mm Thickness (F/R)
Brake Levers: Aluminum Alloy, with Power Cutoff
Calipers: Dual-piston brake calipers
Wheel
Rims: Aluminum Alloy
Front Hub: Aluminum Alloy, Nutted
Tire: 20x3.0" ARISUN eBike Puncture Resistant Tires
Cockpit
Handlebar: Aluminum Alloy, Φ25.4mm, 660mm
Grips: ODI Ergonomic Lock-On Grips
Saddle: 8.6" Wide Ergonomic Saddle with High-density Memory Foam.
Seatpost: Aluminum Alloy, Φ30.9mm, 370mm
Clamp: Aluminum Alloy, Quick Release
Supports
Fenders: Plastic, Front and Rear Full Coverage
Rear Rack: Aluminum Alloy, integrated with frame
Pedals: Plastic, Foldable
Kickstand: Aluminum Alloy, included, rear mount
Weight & Load
Bike Weight: 65.7 lbs
Max Bike Load: 440 lbs
Rear Rack Load: 120 lbs
Geometry
- A - Seat Tube Length : 400mm
- B - Effective Top Tube (ETT): 646.7mm
- C - Reach: 484mm
- D - Stack: 531mm
- E - Head Tube Length: 170mm
- F - Rear Center(horizontal ): 420 mm
- G - Front Center(horizontal ): 715mm
- H - Wheelbase: 1135mm
- I - Headtube Angle: 70°
- J - Seat Tube Angle: 73°
- K - Fork Length: 420mm
- L - Fork Rake/Offset: 30mm
- M - Trail: 68mm
- N - Stand Over Height: 493mm
- O - Bottom Bracket Height/Drop: +15mm (Rise)
- P - Min Saddle Height: 790mm
In The Box
FAQs
What is the range of the Flex?
The Flex is equipped with a high-capacity battery(624Wh) providing up to 70 miles of range on a single charge (using PAS 1). Actual range depends on rider weight, terrain, and assist level.
How compact is the Flex when folded?
The Flex is designed to "Flex Your Routine." It folds down in seconds to fit into most car trunks(40” x 19” x 29”), SUVs, or tight storage spaces at home or the office.
Does the Flex connect to an App?
Yes! You can sync your Flex with the Hynox App via Bluetooth to track rides, customize speed settings, and keep your firmware updated via OTA (Over-the-Air).
What is the maximum payload for the rear rack?
The Flex features an Integrated Rear Rack built directly into the frame for maximum rigidity. It is rated for a heavy-duty payload of 120 lbs, making it perfect for groceries, gear, or delivery tasks.
What kind of brakes does the Flex use?
For your safety, we use Logan Hydraulic Disc Brakes. These provide superior, fade-free stopping power and better modulation compared to mechanical brakes, especially when carrying heavy loads.
Is the Flex water-resistant?
Yes, the Flex is built to handle real-world conditions. All electrical components are IPX6-rated to withstand rain and splashes, though we do not recommend pressure washing or submerging the bike.
What kind of warranty comes with the Flex?
We stand behind our build quality. Every Flex comes with a 2-Year Warranty. We also provide lifetime technical support to ensure your Flex stays on the road.
How long does shipping take and is it free?
We offer Free Shipping to the lower 48 states. Once your order is processed, it typically ships within 48 hours. Most riders receive their Flex within 3-5 business days
What is your return policy?
We offer a 30-Day Trial. If the Flex doesn’t fit your routine, you can return it within 30 days. Please refer to our full Return Policy page for specific terms and conditions.