Find a Store
Home > All E-Bikes > Muon Fermion Pro

Muon Fermion Pro

Gravel E-Bike
€2.399,00
Include VAT
Free Shipping
Muon Fermion Ultra
Muon Fermion Pro
Color - Sand Yellow
Size - For Rider 167 - 186cm (5'6"- 6'1") M S
Exclusive Offer
Headlight (Fermion)
FREE
$49.90
Taillight (Fermion)
FREE
$39.90
Payment Methods.  Learn More
Specs
Performance
Weight
17.6kg
Assist Speed
25 KPH
Range
120 KM
Electronics
Motor
250W Brushless Hub Motor, 520W Peak, 42N.m Torque
Sensor
Torque Sensor
Battery
Internal Battery, Capacity 345.6 Wh(36 V-9.6 Ah), With BMS Safety System
Charger
42V / 4A
Display
1.45" Color TFT-LCD display Integrate with handle bar, Available for BLE/APP connection
Assist Switch
Left Switch Unit for Assist
Tail Light
Tail Light, 7 Hrs battery Life With Rechargeable Battery
Front Light
Headlight. 50 LUx/40 LUx/30 LUx 3 Mode With Rechargeable Battery
APP
VanLife App
Smart System (TBox)
Selectable
Component
Frame
6061 Aluminum Alloy Frame Road/Gravel Design Hub-motor adaptation. The frame strength test reaches 150% of ISO 4210 standard
Front Fork
Rigid Fork,Aluminum Alloy, Road / Gravel Style.12*100 Mm THRU Axle Dropout, Flat-Mount Disc Brake Mount.
Rear Derailleur
Shimano® CUES 400 9-Speed
Crankset
42T Chainring, 170mm Crank
Cassette
Shimano® 9-Speed Cassette, 11-41T
Chain
Shimano® CN-LG500
Brakes
Tektro® Hydraulic Disc Brake.160Mm Rotor
Rims
Aluminum Alloy, Double Wall
Front Hub
14G×36H,M12×100 Thru-Axle
Spokes
36*2 Stainless Steel Spokes
Tires
CST® 700C * 40C Gravel Tires
Tubes
CST® 700C * 40C Puncture.Resistant Inner Tubes
Handlebar
Carbon One-piece Flat bar.Width 680mm, Extension 100 mm.Compatible with internal cable routing
Stem
One-Piece Carbon Cockpit
Seat Post
Aluminum Alloy, Dimension 30.9 mm.Length 350 mm
Saddle
Ergonomic Sport Saddle
Grips
Velo® VLG-1859D3. Size 136 Mm
Pedals
9/16" Axle Aluminum Alloy Pedals
Vanpowers Muon Fermion Pro
Vanpowers Muon Fermion Pro

Ships in 2 business days from the Local Warehouse

Free Shipping & Up to 6-year warranty

€2.399,00
SPEED

32 KPH

RANGE

Up to 120 KM

FLAT HANDLE BAR

Carbon Fiber

SENSOR

Torque Sensor

APP(SELECTABLE)

VanLife App

SPEED

32 KPH

RANGE

Up to 120 KM

FLAT HANDLE BAR

Carbon Fiber

SENSOR

Torque Sensor

APP(SELECTABLE)

VanLife App

Price & Performance Showdown

April 28, 2025
Price
Battery
Charger
Max Speed
Range
Weight
Drivetrain
Design
Brakes
Fermion Pro
€2,399 
36V 9.6Ah 345.6Wh Internal Lithium-ion Battery, LG Cells, With BMS system 
42V/4A Fast Charger 
25 KPH
120 KM
17.6kg
Shimano® CUES U4000 9-Speed
Minimalist Integrated Cable Routing 
Shimano® GRX Hydraulic Disc Brake. 160mm Rotors 
Spec***zed
€4,139
Specialized SL1-320, Fully Integrated, 320Wh
48V Custom Charger
45 KPH
128 KM
32lbs
SRAM GX, Trigger, 12-Speed
Sleek Design
Tektro HD-R510, Hydraulic Disc, 160mm
Ur***ia
€1,839
36V 9.8Ah (352.8Wh), Samsung Li-ion, Certified to UL-2271, IPX5
2.5H Fast Charger, 36V 4Amp
40 KPH
128 KM
37 lbs
Shimano 8-Speed
Sleek Desgin
Dual-Piston Hydraulic Disc Brakes

Features

Lightweight & Durable Frame with 6-Year Warranty

UrbanCross features a 6061 aluminum alloy frame that weighs just 39 lbs—light enough for effortless lifting and city transport. Tested to 150% of ISO 4210 standards, this frame ensures exceptional strength and comes backed by a 6-year structural warranty.

120KM LG Battery with Fast Charging & Smart BMS

Powered by UL-certified 345.6Wh LG cells, this internal battery integrates BMS for smart heat control and safety. Enjoy up to 75 miles per charge, with 42V 4A fast charging—60% in 1.5 hours, adding 45 miles.

CST® 700x40C Gravel Tires with EPS Puncture Protection

The CST® 700x40C tires feature a dual-compound tread and 60 TPI casing for balanced grip and durability. Equipped with EPS puncture protection, they offer reliable performance on gravel and urban roads, ensuring a smooth and secure ride.

Tektro® Hydraulic Brakes for Safer, Smoother Stops

Equipped with proven Tektro® hydraulic disc brakes and 160mm rotors, the UrbanCross-Pro delivers strong, responsive braking. Enjoy smoother, more controlled stops with less hand fatigue. Better heat dissipation ensures safe downhill rides and long-lasting performance, far beyond standard mechanical brakes.

Sleek 1.45" Integrated Handlebar Display

The 1.45-inch color TFT-LCD screen features a clean, cordless design seamlessly built into the handlebar. Its minimalist look enhances the bike’s elegance while supporting BLE/App connectivity and internal cable routing—giving you both smart functionality and a clutter-free cockpit.

Shimano® CUES U4000 9-Speed: Smooth, Durable Drivetrain

Shimano CUES U4000 9-speed drivetrain uses LINKGLIDE technology for buttery-smooth shifts and up to 3× the lifespan of standard drivetrains. Built to handle high-torque e-bikes, it offers quiet, precise shifting under load and low-maintenance reliability for gravel adventures and daily commutes.

Responsive 250W Motor with Torque Sensor & 42N.m Power

The rear hub motor delivers up to 520W peak power and 42N.m of torque for strong hill starts. Integrated with a torque sensor, it provides smooth, natural pedal assistance that responds precisely to your effort—ideal for urban commutes and variable terrain.

Carbon Flat Bar with Sleek Internal Cable Routing

Crafted from one-piece carbon fiber, the 680mm flat bar with a 90mm extension offers lightweight strength and precise control. Designed for internal cable routing, it improves aerodynamics, reduces cable wear, and enhances the e-bike’s clean, modern look.

Size & Fit

S
155-168cm
M
165-185cm
L
180-200cm
Recommended Height: 5'5'' - 6'3'' ( 165cm-190cm)
A Seat Post Length 450mm
B Seat tube angle 74°
C Top tube length 570mm
D Head tube length 148mm
E Head tube angle 71°
F Front wheel to center 629mm
G Trail 77mm
H Wheelbase 1065mm
I Chain stay length 445mm
J Drop BB 70mm
K Stack 584mm
L Reach 403mm
M Stand over height 792mm
N Handlebar width 540mm
O Stem length 100mm
P Crank length 170mm
Q Saddle height 533mm - 768mm
A Seat Post Length 470mm
B Seat tube angle 74°
C Top tube length 570mm
D Head tube length 148mm
E Head tube angle 71°
F Front wheel to center 629mm
G Trail 77mm
H Wheelbase 1065mm
I Chain stay length 445mm
J Drop BB 70mm
K Stack 584mm
L Reach 403mm
M Stand over height 797mm
N Handlebar width 540mm
O Stem length 100mm
P Crank length 170mm
Q Saddle height 553mm - 788mm
A Seat Post Length 500mm
B Seat tube angle 75.3°
C Top tube length 591mm
D Head tube length 148mm
E Head tube angle 72.3°
F Front wheel to center 650mm
G Trail 69mm
H Wheelbase 1083mm
I Chain stay length 445mm
J Drop BB 80mm
K Stack 599mm
L Reach 434mm
M Stand over height 802mm
N Handlebar width 540mm
O Stem length 100mm
P Crank length 170mm
Q Saddle height 583mm - 818mm

Which Model Is Right for You?

Muon Fermion Ultra
Learn More
Muon Fermion Pro
Learn More
Color
Mint Green/Sand Yellow
Mint Green/Sand Yellow
Mode Pedal-Assist Pedal-Assist
Assist Speed 25 KPH 25 KPH
Range 120 KM 120 KM
Weight 17.6Kg 17.6Kg
Motor 250W Brushless Hub Motor, 520W Peak, 42N.m Torque 250W Brushless Hub Motor, 520W Peak, 42N.m Torque
Sensor Torque Sensor Torque Sensor
Battery Internal LG Battery, Capacity 345.6 Wh
(36V - 9.6Ah), With BMS Safety System		 Internal LG Battery, Capacity 345.6 Wh
(36V - 9.6Ah), With BMS Safety System
Display 1.45" Color TFT-LCD Display.
Integrate With Handlebar.
Available For BLE/APP Connection		 1.45" Color TFT-LCD Display.
Integrate With Handlebar.
Available For BLE/APP Connection
APP ✨VanLife App VanLife App (Selectable)
Smart System ✨Remote location and anti-theft/Proximity Start/Bike issues monitoring and diagnosis/Riding information and route tracking/Sound function/SOS/OTA Anti-theft Rear-hub Locking
Tail Light Tail Light, 7 Hrs Battery Life
With Rechargeable Battery		 Tail Light, 7 Hrs Battery Life
With Rechargeable Battery
Front Fork Rigid Fork, Aluminum Alloy, Road / Gravel Style. 12*100 mm THRU Axle Dropout, Flat-Mount Disc Brake Mount. Rigid Fork, Aluminum Alloy, Road / Gravel Style. 12*100 mm THRU Axle Dropout, Flat-Mount Disc Brake Mount.
Rear Derailleur ✨Shimano® GRX 600 11-Speed Shimano® CUES 400 9-Speed
Brakes ✨Shimano® GRX Hydraulic Disc Brake 160 mm Rotor Tektro® Hydraulic Disc Brake 160 mm Rotor
Handlebar ✨Carbon One-piece Drop Bar Width 440 mm, Extension 100 mm with Cordless Design Carbon One-piece Flat Bar Width 680 mm, Extension 100 mm with Cordless Design
Seat Post Aluminum Alloy, Dimension 30.9 mm, Length 350 mm Aluminum Alloy, Dimension 30.9 mm, Length 350 mm
Chain ✨Shimano® CN-LG500 KMC® E11 Chain
Grips Handlebar Tape Velo® VLG-1859D3. Size 136 mm
Muon Fermion Ultra
Learn More
Muon Fermion Pro
Learn More
Color
Mint Green/Sand Yellow
Mint Green/Sand Yellow
Mode
Pedal-Assist
Pedal-Assist
Assist Speed
25 KPH
25 KPH
Range
120 KM
120 KM
Weight
17.6Kg
17.6Kg
Motor
250W Brushless Hub Motor, 520W Peak, 42N.m Torque
250W Brushless Hub Motor, 520W Peak, 42N.m Torque
Sensor
Torque Sensor
Torque Sensor
Battery
Internal LG Battery, Capacity 345.6 Wh
(36V - 9.6Ah), With BMS Safety System
Internal LG Battery, Capacity 345.6 Wh
(36V - 9.6Ah), With BMS Safety System
Display
1.45" Color TFT-LCD Display.
Integrate With Handlebar.
Available For BLE/APP Connection
1.45" Color TFT-LCD Display.
Integrate With Handlebar.
Available For BLE/APP Connection
APP
✨VanLife App
VanLife App (Selectable)
Smart System
✨Remote location and anti-theft/Proximity Start/Bike issues monitoring and diagnosis/Riding information and route tracking/Sound function/SOS/OTA
Anti-theft Rear-hub Locking
Tail Light
Tail Light, 7 Hrs Battery Life
With Rechargeable Battery
Tail Light, 7 Hrs Battery Life
With Rechargeable Battery
Front Fork
Rigid Fork, Aluminum Alloy, Road / Gravel Style. 12*100 mm THRU Axle Dropout, Flat-Mount Disc Brake Mount.
Rigid Fork, Aluminum Alloy, Road / Gravel Style. 12*100 mm THRU Axle Dropout, Flat-Mount Disc Brake Mount.
Rear Derailleur
✨Shimano® GRX 600 11-Speed
Shimano® CUES 400 9-Speed
Brakes
✨Shimano® GRX Hydraulic Disc Brake 160 mm Rotor
Tektro® Hydraulic Disc Brake 160 mm Rotor
Handlebar
✨Carbon One-piece Drop Bar Width 440 mm, Extension 100 mm with Cordless Design
Carbon One-piece Flat Bar Width 680 mm, Extension 100 mm with Cordless Design
Seat Post
Aluminum Alloy, Dimension 30.9 mm, Length 350 mm
Aluminum Alloy, Dimension 30.9 mm, Length 350 mm
Chain
✨Shimano® CN-LG500
KMC® E11 Chain
Grips
Handlebar Tape
Velo® VLG-1859D3. Size 136 mm

Lightning Fast & Free Shipping

Enjoy fast, free shipping on all your orders, ensuring your e-bike arrives quickly and at no extra cost.

Up To 6-Year Warranty

Ride with confidence with our up to 6-year warranty, covering your e-bike for years of worry-free use.

Hassle-Free After Sale

Experience a smooth, hassle-free buying process with easy returns and dedicated customer support.

Experience Smart Cycling with Vanlife App
Easily track your ride history, mileage, and rankings. Enjoy map navigation and community sharing features designed to enhance your daily eBike experience—simple, efficient, and perfect for everyday riders.
Download the Vanlife App

What’s In The Box

Fermion Pro x 1
Battery x 1
User Manual x 1
Toolkit Box x 1
Keys x 2
Pedal x 2
Battery Charger x 1
Taillight x 1
Headlight x 1

Frequently Asked Questions

You can pay with a credit card (Mastercard/Visa), PayPal, Apple Pay and so on.

If your credit card was declined or your payment failed, this may be due to your bank's automated anti-fraud systems or your payment limit. Please make sure your credit card information was entered correctly, or try another payment method.

If the transaction still doesn't go through, please contact your bank to make sure nothing is blocking the payment. If everything looks good from the bank's side, please get in touch with our support team, and we'll diagnose the problem.

If you have any problems with payment, please get in touch with our Customer Support team.

The prices of our bikes are listed on our website. You'll see an overview of the total costs, including shipping, at the checkout page when placing an order. We cannot provide individual quotes outside of this. If you want to know more, you can refer to the Terms & Conditions.

Your data is handled confidentially and encrypted with SSL secure server software. Information regarding your order, name, address, credit card, or bank details is encrypted and cannot be read by any third party. If you want to know more, you can refer to the privacy policy.

Your invoice will be available as your order leaves our warehouse. You will receive the invoice by email, and you can also download it from your Vanpowers account.

It is not possible to issue an invoice before your bike is shipped.

Thank you for your interest in our products. Unfortunately, we currently do not offer shipping to these places. However, I'd be happy to connect you with our Customer Support team who may be able to work with you to explore potential solutions.

Yes, we offer free shipping and all taxes are included in the price! There are no additional fees or charges at checkout.

You can check your order status on your Muon account. If your bike has already been shipped, you'll receive a track & trace email from our shipping partner, and you can also track your order number by clicking Track orders.

If your bike hasn't been shipped yet and you would like to change your delivery address, you can contact us.

If you have other shipping consulting questions, refer to our shipping policy.

We offer a 30-day, no-hassle returns policy because we believe the only way to know if our bikes are suitable for you is to ride them.

Don't hesitate to get in touch with us first. We will help you cancel the order and process to refund you, and the refund takes 5-8 business days back to your account.

We base our range estimates on real-world testing conditions to give you a realistic idea of each bike’s performance. Each model’s maximum range is measured with a 75 kg (165 lb) rider on flat ground using the lowest pedal assist level as a baseline. Keep in mind that factors like terrain, rider weight, and riding habits will affect your actual mileage, so your results may vary.

We guarantee each new E-Bike's frame and original components against defects in craft and materials for one year from the day of delivery of your bike. It does not include parts subject to normal wear and tear (Brake Pads, Spokes, Tubes, Flywheel Pinion, Saddle, Kickstand.) and improper assembly or follow-up maintenance. See the complete warranty details here.

Screw Joints

-Check the vehicle regularly for loose screw connections according to the maintenance schedule and tighten loose screws with a torque wrench.

-Do not ride the bicycle if you find loose screw joints.

-Have loose screw joints checked by a professional if you lack the necessary expertise and tools.

Frame and forks

-Check the frame and rigid fork for cracks, deformation, or discoloration.

-If the frame or the forks is cracked, deformed, or discolored, contact the professional immediately.

-Do not use the cycle if you find any cracks, deformation, or discoloration.

Saddle

-Check whether you can twist the saddle.

-If you can twist the saddle, tighten the seat post clamp. Observe applicable torques.

-Check whether you can move the saddle horizontally in the direction of travel or the opposite direction.

If you can move the saddle, adjust the saddle clamp.

Wheels

-Check whether the front or rear wheel can move sideways and whether the wheel nuts move.

-If the wheel nuts move, have a professional check the screw joints.

-If the quick-release axle moves, adjust the axle.

-If the front or rear wheel moves sideways, have a professional check the wheel.

-Check whether there is an equal distance between the front wheel and the front fork or between the rear wheel and the frame.

-If the distances are not identical, please have a professional check the front and rear wheels.

-Lift the cycle and turn the front or rear wheel. Check whether the front or rear wheel swings sideways or outwards.

-If the front or rear wheel swings sideways or outwards, please have a professional check the wheel.

-Check the front and rear rims for cracks, deformation, or color changes at regular intervals.

-Check whether the rim is under the inner tube and the rim tape.

-Do not use the cycle if the rim is cracked, deformed, or discolored.

-Have a professional check if there is any damage on the rim, materials, and aluminum.

-Squeeze the spokes together gently with your thumb and fingers, checking whether

-The tension is the same for all spokes. If the tension varies or spokes are loose, have a professional check the spokes tensioned.

Tires

Check whether the tire pressure is correct according to the data on the tire sidewall.

Check the tires for cracks and damage from foreign bodies.

Check whether you can feel the tire tread.

If a tire is cracked or damaged, or the tread depth is too low, have the tire replaced by a professional.

Brake

-It's crucial that you learn and remember which brake lever controls which brake (front/rear) to ensure your safety.

-To check which configuration your eBike is set up, squeeze one brake lever and see whether the front or rear brake engages. Now to the same with the other brake lever. Remember this configuration.

-While testing the brake configuration, make sure that your hands can comfortably reach and squeeze the levers with no issues. If you experience any problems or discomfort operating the brakes, please reach out to us before riding.

-Review the brake manufacturer's user manuals and care for your brakes correctly.

Battery

-It's essential to follow these instructions and safety tips to preserve the longevity of your battery's life and ensure proper performance.

-Fully charge the battery before each ride to ensure it is ready to go the entire range. It will help reduce the chance of over-discharging the battery.

-If the battery becomes physically damaged, non-functional, has been dropped, or involved in a crash, or you notice it performing abnormally, please discontinue use and contact the seller immediately.

Charging your Battery

-The charger is rated for 100-240V. Be sure to check the charger, the charger cables, and the battery for damage before beginning each charge.

-Charging time takes about 3-4 hours. It may take longer to fully charge the battery on rare occasions, mainly when the bike is new or stored for a long time.

-Only charge the battery with the supplied charger as others may cause damage to the battery or increase the possibility of fire or explosion.

-While the charger is designed to stop charging once the battery is full automatically, please do not leave it plugged in for more than 12 hours.

-Make sure your charger is isolated from liquids, dirt, and debris.

We set up every new e-bike to make sure it's ready to ride, but it's normal for some parts to work a little loose. To make sure you enjoy many years of smooth riding, we recommend getting your new bike checked by a professional after three months or 1000km of riding. Here's what they'll do:

-Tighten and lube the chain

- Adjust the brakes

- Align the wheels

- Check the gearing

- Retighten all bolts

- Lube the brake and shift cables

- Check the tire pressure

Currently, our e-bikes do not feature regenerative brakes. However, we truly appreciate your suggestion and will definitely consider this feature for our future product development.

Pedal assist uses a cadence sensor built into the drivetrain of the e-bike. The sensor detects when the rider is revolving the pedals and signals the electric motor to provide the level of pedal assistance that has been selected.

For your and your bicycle's safety and the laws in your location, please understand that we cannot provide "cheat codes" to our dear supporters.

Yes. Helmet requirements vary by country in Europe, so please check your local laws. Regardless of legal requirements, we strongly recommend wearing a helmet for your safety while riding.

We'll send you a notification email regarding each stage of your order. Please contact service@muon.com if you have any questions.

We'll ship your e-bike directly to the address you provide during checkout. You can expect delivery within 3-7 business days.

Once your order is processed, we'll send you tracking information so you can monitor your shipment's progress.

Please contact our amazing support team: service@muon.com.

⚠️ Helmet use is strongly advised for all riders. Properly fitted head protection can significantly reduce injury risks. Many jurisdictions require helmets by law, particularly for younger riders.

⚠️ Attention: This e-bike is for riders aged 16 and up. It is not for children's use.

Sign up for new stuff and special offers.

We promise not to be jerks about it.
Cart
You may also like

Discount - Limited to one code per order

Discount Applied

Subtotal

Add a bike Check out Continue shopping

You're saving $0.00

Shipping, taxes, and discount codes calculated at checkout.

Summer Sales
Commuter E-Bike
$1,099 $1,749
City Vanture
All-Terrain E-Bike
$2,199 $2,299
GrandTeton Pro
Gravel E-Bike
$2,999
UrbanCross-Ultra