Carbon Classic ST Electric City Bicycle

Carbon Classic Step-Thru E-Bike

$1,999.00 ~~$2,299.00~~

or as low as$83.29/Month

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Professional Reviews

“The Classic ST Is a Game Changer! It Might Be the Lightest Bike I’ve Ever Reviewed — Plus, a Bike Rack You and Your Spouse Will Love.”

Monkey Wrench Mike

“Smooth, exceptionally quiet, and remarkably stable — the ride quality is genuinely impressive.”

Area 13

“Very attractive, very nice urban style ebike! The Uetopia Carbon 1 ST is super light at just 38 lbs, yet a very smooth ride with excellent components.”

eBike Reviews & Adventures

Light as Air, Bold by Design

Built with aerospace-grade Toray™ carbon fiber, the Carbon Classic ST Electric City Bicycle is 50% lighter than aluminum yet incredibly strong. Its sleek carbon frame, torque sensor, and throttle deliver effortless control and instant acceleration-redefining smooth, powerful riding.

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Inner Rotor Motor

Better than conventional hub motors

Delivers instant power with a lighter, quieter ride — built for smoother, more natural cycling.

2× faster response

40% lighter

30% less noise

	Inner Rotor Motor	Conventional Hub Motor (Outer Rotor)
Weight	1.5-2.9 kg	2.5-4.5 kg
Noise	< 55 dB (Quiet & Smooth)	55-65 dB (Noticeably louder)
Response	2x faster	Standard
Ride Feel	Effortless & Silent	Clunky & Noisy

Why it feels better

Smaller, faster, more precise

The inner rotor spins at a smaller radius with lower inertia, paired with high-ratio precision gears, so power kicks in the moment you need it - with no lag and no hesitation.

Why it's quieter

More comfort

All moving parts enclosed in a rigid metal housing lock noise at the source, while high-precision gears with minimal profile deviation ensure smooth, vibration-free operation.

Why it's lighter

More compact by design

A more integrated structure eliminates bulk, reducing overall weight for a lighter ride.

Why Carbon Fiber Is Worth It?

Streamlined. Sophisticated. Classic.

Commute smarter with the Carbon Classic ST, a city ebike with a step-through frame for easy access, smooth rides, ample cargo space, and effortless urban freedom.

Quality in details

Innovative Carbon Frame

Urtopia’s seamless low-step carbon frame is built from aerospace-grade carbon fiber—30% lighter than aluminum yet strong and sleek. Easy to mount, it delivers effortless elegance and performance.

Throttle & Pedal Assist Control

Switch between pedal assist and thumb throttle with an intuitive control panel. Enjoy instant acceleration for quick starts or heavy loads, while the torque-sensing assist delivers a smooth, natural ride.

Torque Sensor Boost

The torque sensor delivers smooth starts and steady climbs, even under heavy loads — providing a natural-feeling ride and up to 30% more range than cadence-based systems.

Adjustable Handlebar

With its 0–90° adjustable handlebar, this cruiser design suits riders of nearly all heights. Effortlessly shift between a sporty lean or relaxed upright position for all-day comfort and control.

Cushioned Saddle for Miles

The wide, shock-absorbing saddle ensures lasting comfort and support, while the adjustable seat post offers a perfect fit for riders of almost any height.

UL-Certified, Removable Samsung Battery

Enjoy up to 75 miles per charge with the 352.8 Wh Samsung Li-ion battery, UL 2271 certified for safety. Its removable design makes charging easy—at home, in the office, or on the go.

Motor & Shimano 8-Speed Drivetrain

The 750W peak motor delivers quick, powerful acceleration for easy climbs and heavy loads. Paired with a Shimano 8-speed drivetrain, it ensures smooth shifting on flats, hills, and winding paths alike.

AirTag Mount — Never Lose Your Bike

Your extra layer of theft protection. Secure your AirTag discreetly on your e-bike and ride worry-free, knowing you can always track it if it’s ever lost or stolen.

LCD Color Display & USB-C Charger

The bright LCD color display shows speed, battery, and assist mode clearly—even under sunlight. Its clean, modern design keeps key stats visible at a glance, while the built-in USB-C port lets you charge your phone anytime you ride.

TEKTRO Hydraulic Disc Brakes

The 180mm hydraulic disc brakes deliver powerful, responsive stopping performance in all conditions. Equipped with cut-off brake levers, they instantly cut motor power when braking, ensuring safer, more controlled rides.

Customized Fenders and Rear Rack

Fenders shield you from mud and rain on rugged trails, ensuring you’re ready for any weather. The custom rear rack adds versatility, letting you carry all your essentials effortlessly, no matter where your adventure leads.

Gear Up, Go Far

Equipped with a rear rack and travel-ready front fork with luggage mounts, the Carbon Classic ST Electric City Bicycle is built for long rides. Four extra frame mounts provide versatile storage-just pack up and go!

It’s Time to Give It a Spin!

Experience the ride in person — with over 1000+ service partners across the U.S., you can enjoy a professional test ride and discover the Urtopia difference for yourself.

Test ride

Local Care, Anytime

Enjoy complete peace of mind with Urtopia’s trusted service network:

2-year warranty on all e-bikes
24-hour service response via our in-app support portal
Spare parts available locally, shipping within 3 days
10+ technical experts with a 99% satisfaction rate

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FAQs

1. How durable is the carbon frame of the Carbon Classic ST Electric City Bicycle?

The Carbon Classic ST is a premium urban e bike built with high-quality Toray T700/T800 carbon fibers and advanced EPS molding technology. This process creates a lightweight yet exceptionally strong and impact-resistant frame with a smooth, seamless interior that eliminates stress points. The result is a precisely engineered structure that offers the same reliability and performance you would expect from top-tier racing bikes, making it perfect for everyday city rides and long-term durability.

2. What is the difference between a hub motor and a mid-drive motor?

Hub motors are generally lighter, smoother, and more responsive, making them ideal for city ebike rides and gravel roads. Mid-drive motors, on the other hand, deliver better performance on steep climbs but tend to be heavier, noisier, and more complex. The Carbon Classic ST and Carbon Classic eBike are designed for urban and gravel environments and feature a hub motor to provide an agile and effortless riding experience. For riders who often face steep hills, our Fusion models offer a powerful alternative.

3. Is the handlebar adjustable?

Yes, this bike comes with a 60° adjustable handlebar that allows the rider to achieve the desired riding position

4. Can I ride a step through cruiser e-bike in different weather conditions?

Yes, the Carbon Classic ST is designed to perform reliably in all weather conditions. With an IP65 rating for dust and water resistance, it protects you from rain and splashes. Its frame accommodates tires up to 45C wide, providing excellent stability and traction on wet, uneven, or rough surfaces. Whether riding through rain, dust, or challenging terrain, the Carbon Classic ST delivers a confident and dependable ride.

5. What is the display on the Carbon Classic ST Electric City Bicycle?

Carbon Classic ST comfort ebikes come with a bright LCD display that shows speed, battery, and assist mode. It also comes with a USB-C port to charge your phone during a ride

Size Guide

xxxx

Recomm. rider height

A. Max Seat Height

B. Min Seat Height

C. Seat tube length

D. Wheelbase

E. Overall length

F. Wheel diameter

G. Top tube length (effective)

H. Head tube length

I. Handlebar grips height

J. Standover height

One Size

5’1’’ - 6’1’’

910 mm (36’’)

825 mm (32’’)

380 mm (15’’)

1092 mm (43’’)

1812 mm (71’’)

720 mm (28’’)

583 mm (23’’)

200 mm (8’’)

1160 mm (46’’)

477 mm (19’’)

Specs

General Info

Model

Carbon Classic Step-Thru E-bike

Net Weight

38 lbs w/o acc.

Material

Carbon fiber (frame, fork)

Range

Up to 75 miles
*The 75-mile range was tested with a 180 lb rider, riding in ECO mode on flat roads.

Top Speed

20mph by default
25mph upon unlock

Total Weight Limit

240 lbs

Rider Height

5’1’’ - 6’1’’

Brakes

TEKTRO hydraulic disc brake with power cut-off sensor

Wheels

700C (ISO 622mm BSD), 40C (45C max.) tires, puncture-proof tire

Water Resistance

IP65

Ebike System

Class

Class 2

Motor

750W (peak) rear hub, 60Nm

Battery

352.8Wh Samsung Li-ion, certified to UL-2271, removable battery

Pedal Assist

4 levels

Charger

2.5H fast charger

Display

3.5'' Color LCD display

Sensors

Torque sensor

Lights

Front: External light, 30 Lux
Rear: External rear light (Not ARES lights)

Drivetrain

Chainrings

44T

Crankset

Aluminum alloy, 170mm

Cassette

11-40T, 8 Speed

Chain

Shimano 8 speed

Rear Derailleur

Shimano 8 speed

Shift Lever

8 Speed Trigger

Pedals

9/16" Alloy Platform

Cockpit

Grips

Durable ergonomic Grips, lockable

Seat Post

Aluminum Alloy, φ31.6mm, 300mm

Feels like a Rolls Royce compared to previous bike!

I was riding a regular inexpensive street bike converted to e-bike. It had huge battery and motor that added lots of weight. Now that I’m loading my bike alone, I needed something much lighter and chose the carbon classic step through. My local trail has a long, steep incline about a mile long. I was worried it didn’t have enough power to make it up that hill until I accidentally used the smart mode. WOW! It flew up that hill in 6th gear. This bike is super smooth and quiet, easy to lift to bike rack and all the controls are very easy to access and simple to use. I’m over 60 and absolutely love this bike. Very happy with it.

My Wife’s Favorite Bike

A few months ago my wife started talking about wanting an e-bike so she could join me on weekend rides around the city. She hadn’t ridden much in recent years and was a little hesitant about getting back into cycling, so I spent quite a bit of time researching options that would feel approachable and comfortable for her. The Carbon Classic ST stood out because of the step-through frame and the relatively lightweight carbon construction.

From the first ride, she felt comfortable on it. The step-through design makes mounting and dismounting very easy, which helped build her confidence immediately. The riding position is upright and relaxed, which is perfect for casual rides and exploring different parts of the city.

Another thing she really likes is the throttle. On days when she’s feeling a bit tired, she can rely on the motor more and still enjoy the ride without worrying about getting exhausted halfway through.

Since getting the bike, we’ve been riding together almost every weekend. Sometimes we’ll ride to a café or the market, and other times we’ll just explore different neighborhoods.

It’s been great seeing how much she enjoys riding again. For anyone looking for a comfortable and approachable ebike, especially for casual city rides, the Carbon Classic ST has been a fantastic choice.

Perfect for Relaxed City Riding

I wanted an e-bike that felt comfortable and easy to ride, especially for shorter trips around the city. The step-through frame on the Carbon Classic ST makes a huge difference. Getting on and off the bike is effortless, which is especially helpful when stopping frequently in traffic or while running errands.

The bike feels lighter than most e-bikes I’ve tried, and the ride itself is smooth and stable. I also like having the throttle available for those moments when I just want a little boost without pedaling too hard.

Overall it’s been a great everyday bike.

Easy to live with

The step-thru frame makes a bigger difference than I expected. Mounting and stopping feel effortless, especially when carrying a bag or wearing everyday clothes. It doesn’t feel like a “special-purpose” bike, it just fits naturally into my routine. I ride it more often simply because it’s easy.

First e-bike at 57, and I’m hooked.

I was honestly nervous about getting an e-bike. I’m not “techy” and didn’t want something heavy or complicated. The Classic ST was perfect for me.

The step-thru frame makes getting on and off super easy. I ride almost every morning now, around the neighborhood, to the park, even to the Costco.

What surprised me most is how much better I feel physically. My knees don’t hurt like they used to, but I still feel like I’m actually exercising.

Customer support was kind and patient when I had questions. That mattered a lot to me.

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