Urtopia’s Carbon 1 Pro and Carbon Fold Step-Thru are both unusually light carbon-fiber e-bikes, but they solve very different problems. The Carbon 1 Pro is built around full-size ride quality, longer range, higher assistance speed, and Urtopia’s connected Smartbar experience. The Carbon Fold Step-Thru is built around portability: it folds, weighs less, fits a wider range of riders, and is easier to store in apartments, offices, RVs, and smaller vehicles.
If you are already sold on Urtopia but deciding between these two models, the choice is not really “which bike is better?” It is “which tradeoff matters more to you: maximum portability or maximum range and full-size performance?”
Quick Verdict
Choose the Carbon 1 Pro if you want a full-size 700C e-bike for longer commutes, faster assisted riding, more range, stronger published motor output, and Urtopia’s connected Smartbar features.
Choose the Carbon Fold Step-Thru if you regularly carry your bike, live with limited storage, combine riding with a car or public transit, want a lower step-through frame, or simply value a 31-pound folding package more than maximum range.
Carbon 1 Pro vs Carbon Fold Step-Thru: Key Specs
| Specification | Urtopia Carbon 1 Pro | Urtopia Carbon Fold Step-Thru |
|---|---|---|
| Current WattWheelz price | $2,099 | $1,599 |
| Net weight | 37 lb without accessories | 31 lb without accessories |
| Frame / fork | Carbon fiber | Carbon fiber |
| Folding | No | Yes, two-step folding |
| Published range | Up to 80 miles* | Up to 50 miles* |
| Top speed | Up to 25 mph | 20 mph |
| Motor | 350W rated, up to 750W peak, 45Nm | 250W rated, up to 450W peak, 42Nm |
| Battery | 352.8Wh Samsung removable | 252Wh removable seat-post battery |
| Wheels | 700C x 40C | 20 x 1.95 in |
| Payload | 240 lb | 220 lb |
| Rider height | 5'3"–6'5" across sizes | 4'11"–6'5", one size |
| Smart connectivity | Smartbar, GPS, eSIM, app, theft defenses | Color display; portability-focused setup |
*Manufacturer-published range is based on favorable test conditions. Real-world range varies with rider weight, terrain, temperature, wind, tire pressure, assist level, and riding style.
Ride Feel: Full-Size Performance vs Compact Agility
The Carbon 1 Pro uses a conventional full-size 700C platform. That matters if most of your riding is on roads, bike paths, longer urban routes, or mixed-surface commutes. Larger wheels generally give the bike a more familiar bicycle feel, roll efficiently over imperfect pavement, and make long rides feel less compact than a small-wheel folder.
The Carbon Fold Step-Thru uses 20-inch wheels and a folding frame. That gives it a very different personality. It is more compact, easier to maneuver in tight indoor spaces, and easier to fit in the back of a vehicle, but it will not feel exactly like a full-size gravel-style commuter at higher speeds or over long distances.
If you mostly ride rather than carry your e-bike, the Carbon 1 Pro has the more natural performance-oriented platform. If your commute includes elevators, staircases, trains, trunks, RV storage, or a desk-side parking spot, the Fold ST starts making much more sense.
Weight and Portability
Weight is one of the biggest reasons to consider either Urtopia model. The Carbon 1 Pro is published at 37 pounds without accessories, which is already light for a full-size electric bike. The Carbon Fold Step-Thru is lighter still at about 31 pounds without accessories and adds a true folding frame.
Those six pounds matter more than they sound when you are actually lifting a bike over a threshold, putting it into a trunk, carrying it through a lobby, or moving it up stairs. More importantly, the Fold ST reduces the bike’s physical footprint after folding. Urtopia publishes a folded length around 32 inches and height around 28 inches.
For a rider with secure garage storage, the Carbon 1 Pro’s weight is already easy to live with. For an apartment rider or mixed-transit commuter, the Fold ST’s compactness can be the feature that changes whether owning an e-bike is practical at all.
Range: Carbon 1 Pro Has the Clear Advantage
Urtopia publishes up to 80 miles for the Carbon 1 Pro and up to 50 miles for the Carbon Fold Step-Thru under favorable pedal-assist testing. That is a meaningful difference, and the battery capacities help explain it: 352.8Wh for the Carbon 1 Pro versus 252Wh for the Fold ST.
The Carbon 1 Pro is therefore the stronger choice if you have a long commute, regularly ride for recreation after work, dislike charging frequently, or simply want more energy reserve. The Fold ST still has useful commuter range, but its design prioritizes compactness over maximum battery capacity.
Neither maximum-range number should be treated as a guarantee. Higher assist levels, colder weather, heavier loads, hills, stop-and-go riding, and sustained speed can reduce real-world distance substantially.
Motor Power and Speed
The Carbon 1 Pro is published with a 350W rated rear-hub motor, up to 750W peak output, and 45Nm of torque. Urtopia lists a top assisted speed up to 25 mph.
The Carbon Fold Step-Thru uses a 250W rated rear-hub motor, up to 450W peak, and 42Nm of torque, with a 20 mph top speed. An optional throttle is available for the Fold ST in Urtopia’s current configuration, while the Carbon 1 Pro remains more centered on pedal-assist riding.
For most city riding, both can provide smooth assistance through a torque sensor. The Carbon 1 Pro simply has more published speed and power headroom. That makes it the better fit for riders who value faster commuting, stronger assistance on longer routes, or a more athletic e-bike feel.
Battery Design and Charging
The Carbon 1 Pro uses a removable 352.8Wh Samsung lithium-ion battery integrated into the frame. The Fold ST uses a removable 252Wh seat-post battery. Both designs are built around keeping the bike visually clean and relatively light.
The Fold ST’s seat-post battery is particularly clever for a folding bike because it supports the compact frame architecture without requiring a large central battery enclosure. The tradeoff is simply lower total energy capacity.
If you expect to ride 10–20 miles per day and can charge routinely, the Fold ST battery is likely the more practical compromise. If you want to stretch the time between charges or routinely ride farther, the Carbon 1 Pro gives you more reserve.
Smart Features: Carbon 1 Pro Wins Easily
The Carbon 1 Pro is one of the more technology-heavy lightweight commuter e-bikes in WattWheelz’s catalog. Urtopia’s Smartbar and Smartbox ecosystem includes features such as onboard navigation, fingerprint unlocking, voice control, GPS-based tracking, movement alarm, electronic fencing, Bluetooth, 4G/eSIM connectivity, and app integration.
The Fold ST takes a simpler route. It uses a color display and torque sensor but does not try to replicate the Carbon 1 Pro’s connected cockpit experience. That is not necessarily a weakness. Some riders want fewer connected systems and primarily care that the bike is light, folds quickly, and rides naturally.
If theft defenses, GPS, navigation, and connected-bike features are important to your ownership experience, the Carbon 1 Pro is clearly ahead.
Frame Access and Rider Fit
The Fold ST’s step-through frame is a meaningful advantage for riders who want easy mounting and dismounting. Urtopia publishes a very broad one-size rider range from about 4'11" to 6'5".
The Carbon 1 Pro uses a more traditional full-size frame and comes in multiple sizes, covering riders from roughly 5'3" to 6'5". That allows a more conventional size-selection process and may be preferable for riders who care about dialing in a full-size cycling position.
Choose the Fold ST if easy access and one-size simplicity matter. Choose the Carbon 1 Pro if you want a conventional full-size frame and size-specific fit.
Brakes, Drivetrain, and Daily Use
Both bikes use hydraulic disc brakes, which is appropriate for premium commuter e-bikes. The Carbon 1 Pro uses an 8-speed Shimano drivetrain, while the Fold ST uses a 7-speed Shimano setup.
The practical difference is less about one extra gear and more about each bike’s mission. The Carbon 1 Pro is built to cover more distance and broader riding conditions. The Fold ST keeps its component package compact and commuter-focused.
Neither bike is designed as a heavy cargo platform. If you routinely carry large loads or passengers, a dedicated cargo e-bike would be a better category to shop.
Which One Is Better for Apartment Living?
The Carbon Fold Step-Thru. This is its strongest use case.
At around 31 pounds without accessories, with a two-step folding system and compact folded dimensions, the Fold ST is much easier to bring inside. That can reduce theft exposure and remove the need for outdoor storage. It is also easier to fit in smaller elevators and closets.
The Carbon 1 Pro is light enough that many apartment riders can still manage it, but it remains a full-size bicycle. If your building has easy elevator access and you have indoor floor space, that may be fine. If space is genuinely tight, the Fold ST is the more logical purchase.
Which One Is Better for Long Commutes?
The Carbon 1 Pro. Its larger battery, higher published range, faster top speed, full-size wheel platform, and connected navigation features all point in that direction.
A Fold ST can absolutely handle an ordinary urban commute, especially when portability matters at both ends. But if your ride is long enough that you rarely need to carry the bike, the Carbon 1 Pro gives up less performance in exchange for portability you may not use.
Which One Is Better for RVs, Boats, and Small Vehicles?
The Carbon Fold Step-Thru is the easier fit. Folding changes the storage equation much more than a few pounds of weight alone. If the bike needs to share space with luggage, camping equipment, or other gear, compact dimensions can matter more than maximum battery size.
The Carbon 1 Pro can still work well with a hitch rack or larger vehicle, but it is not designed to disappear into a small storage compartment.
Value: Which Bike Gives You More for the Money?
At the time this draft was created, WattWheelz listed the Carbon 1 Pro at $2,099 and the Carbon Fold Step-Thru at $1,599. Live pricing can change, so always verify the current product page before ordering.
The Carbon 1 Pro asks you to pay for more battery, more speed, more connected technology, and a full-size performance platform. The Fold ST asks you to pay for unusually low weight, carbon construction, and a folding chassis that solves storage problems most full-size e-bikes cannot.
That means value depends on which feature you would otherwise have to compromise on. If you never fold the bike, the Carbon 1 Pro is likely the stronger performance value. If you need folding every day, the Fold ST can be worth more to you even with the smaller battery.
Who Should Buy the Carbon 1 Pro?
- You ride longer distances and want more battery reserve.
- You want up to 25 mph of published assisted speed.
- You prefer a full-size 700C platform.
- You value GPS, connected theft defenses, navigation, and Smartbar features.
- You have enough storage space for a normal full-size bicycle.
- You want the stronger all-around performance choice.
Shop the Urtopia Carbon 1 Pro →
Who Should Buy the Carbon Fold Step-Thru?
- You live in an apartment or have limited storage.
- You combine riding with trains, cars, RVs, or elevators.
- You regularly need to lift or carry your e-bike.
- You prefer easy step-through mounting.
- A 20 mph commuter setup is enough for your riding.
- Compactness matters more than maximum battery range.
Shop the Urtopia Carbon Fold Step-Thru →
Final Verdict
The Carbon 1 Pro and Carbon Fold Step-Thru are not redundant bikes. They are two answers to different lightweight e-bike problems.
The Carbon 1 Pro is our pick for riding performance. It offers more published range, more speed, a larger battery, a full-size wheel platform, and a much richer connected-feature set.
The Carbon Fold Step-Thru is our pick for portability. It is lighter, folds quickly, uses a low-access frame, and can fit into living and travel situations that make a full-size bike inconvenient.
If you are still torn, start with the question that is hardest to solve after purchase: Where will the bike live when you are not riding it? If storage is easy, lean Carbon 1 Pro. If storage and transport are daily constraints, lean Carbon Fold Step-Thru.
Explore all Urtopia e-bikes at WattWheelz →
Need help narrowing your choice? Use Find My E-Bike to compare your terrain, range, storage, and riding priorities.
Frequently Asked Questions
Which Urtopia e-bike is lighter?
The Carbon Fold Step-Thru is lighter at about 31 pounds without accessories, compared with about 37 pounds for the Carbon 1 Pro.
Which has more range?
Urtopia publishes up to 80 miles for the Carbon 1 Pro and up to 50 miles for the Carbon Fold Step-Thru under favorable test conditions. Real-world range varies.
Which is faster?
The Carbon 1 Pro is published up to 25 mph, while the Carbon Fold Step-Thru is a 20 mph platform.
Which is better for an apartment?
The Carbon Fold Step-Thru is usually the better apartment choice because it is lighter and folds into a much smaller footprint.
Does the Carbon Fold Step-Thru have the same smart features?
No. The Carbon 1 Pro has Urtopia’s more advanced Smartbar, GPS, app, connectivity, and theft-defense ecosystem. The Fold ST is more focused on portability and straightforward commuting.
Can both bikes be carried in a car?
Yes, but the Fold ST is far easier for smaller vehicles because it folds. The Carbon 1 Pro is a full-size bike and may require a larger cargo area or bike rack.
Sources & Verification
Specifications in this comparison were checked against current WattWheelz product data and Urtopia’s current model information in August 2026.
- WattWheelz — Urtopia Carbon 1 Pro
- WattWheelz — Urtopia Carbon Fold Step-Thru
- Urtopia — Carbon 1 Pro current specifications
- Urtopia — Carbon Fold Step-Thru current specifications
Weights exclude accessories unless noted. Manufacturer range figures are test-condition estimates, not guaranteed real-world results. Pricing and specifications can change.