80mm suspension fork
Improves control and comfort on rough streets, gravel paths and uneven recreational trails.
Description:
Urtopia's first 750W carbon e-bike
Long-range power in a carbon step-through frame
The Urtopia Carbon Atom combines a Toray carbon fiber step-through frame with a 750W rear hub motor, 90Nm of torque and a removable 835Wh LG battery. Built for commuting, hills, errands and recreational all-road riding, it adds front and seatpost suspension without the bulk of a typical high-power utility e-bike.
Carbon fiber frameTorque sensorThrottle includedUL 2849 systemUL 2271 battery
750WRated rear hub motor
1,250WPeak motor output
90NmTorque for starts and hills
835WhRemovable LG battery
95 miMaximum estimated range
58 lbWeight without accessories
Maximum range is a manufacturer estimate. Actual range varies with terrain, speed, temperature, rider and cargo weight, tire pressure and assist level.
Responsive electric assistance
750W power with a natural torque-sensor feel
The torque sensor measures pedaling force and delivers assistance in proportion to your effort. This creates smoother, more predictable support than the abrupt on-off response associated with many cadence-sensor e-bikes.
The 48V rear hub motor is rated at 750W, reaches up to 1,250W peak output and supplies 90Nm of torque for hill starts, loaded errands and longer commutes.
- Four pedal-assist levels
- Throttle assistance up to 20 mph
- 20 mph default top speed
- Up to 28 mph when unlocked where permitted
Long-range removable battery
835Wh capacity for fewer charging stops
The removable LG M58 lithium-ion battery provides 835Wh of capacity and a manufacturer-estimated range of up to 95 miles in favorable conditions. A complete charge takes approximately four hours with the included 48V 4.5A charger.
- Battery certified to UL 2271
- Charges on or off the bike
- Approximately four-hour full charge
- Suitable for long commutes and weekend routes
Carbon step-through construction
Easy access with a lighter utility-bike feel
The sculpted carbon fiber frame provides a low 17-inch standover height for easier mounting and dismounting. At 58 lb without accessories, the Carbon Atom remains substantial enough for utility riding while weighing less than many similarly powered large-battery commuter e-bikes.
Suspension comfort for streets, gravel and everyday riding
An 80mm suspension fork with lockout helps absorb potholes, broken pavement and light trail impacts. A 30mm suspension seatpost adds another layer of vibration control before bumps reach the rider.
30mm suspension seatpost
Reduces vibration at the saddle during longer rides and over imperfect surfaces.
26 × 2.4-inch Kenda tires
Wide puncture-resistant tires add stability, traction and cushioning.
Visibility and braking
Hydraulic disc brakes and integrated signaling
TEKTRO hydraulic disc brakes deliver progressive stopping control for daily traffic, wet conditions and heavier loads. The lighting system includes a 100-lux front light and an integrated rear light with brake-light and turn-signal functions.
- TEKTRO hydraulic disc brakes
- 100-lux front light
- Integrated rear brake light
- Integrated rear turn signals
- IP65 water-resistance rating
Who it is for
A versatile e-bike for commuting, comfort and utility
Daily commuters
Large battery capacity, a torque sensor, integrated lights and an adjustable riding position support repeat daily use.
Hillier routes
A 750W motor and 90Nm of torque provide stronger assistance for inclines, starts and loaded riding.
Comfort-focused riders
The step-through frame, suspension fork, suspension seatpost and adjustable stem support a relaxed position.
Errands and cargo
Optional front and rear rack systems let the Carbon Atom carry groceries, work supplies and daily cargo.
Pavement and gravel
Wide tires and front suspension add versatility beyond smooth city streets.
One-size simplicity
The adjustable cockpit and seat height fit riders approximately 5'3" to 6'3".
Buy from an authorized Urtopia dealer
Brimstone Bicycles provides direct assistance before and after purchase. E-bikes shipped to our store receive professional assembly, setup and a complete safety inspection before pickup.
- Authorized Urtopia dealer support
- Free e-bike shipping
- Professional assembly when shipped to our store
- Pre-delivery safety and function check
- Ongoing service from a real bicycle shop
Technical data
Urtopia Carbon Atom specifications
| General information | |
|---|---|
| Frame | Toray carbon fiber step-through frame |
| Bike weight | 58 lb without accessories |
| Total weight limit | 330 lb |
| Recommended rider height | 5'3"–6'3" / 160–190 cm |
| Colors | Moonlight, Copper, Olive |
| Water resistance | IP65 |
| Electric system | |
| Motor | 48V rear hub motor, 750W rated, 1,250W peak |
| Torque | 90Nm |
| Throttle | Included; assistance up to 20 mph |
| Top speed | 20 mph default; up to 28 mph when unlocked where permitted |
| Battery | 835Wh LG M58 lithium-ion, removable, UL 2271 certified |
| Range | Up to 95 miles under favorable conditions |
| Pedal assist | Four levels with torque sensor |
| Charger | 48V 4.5A; approximately four-hour full charge |
| Display | 3.5-inch color LCD |
| Certification | UL 2849 e-bike system and UL 2271 battery |
| Drivetrain | |
| Rear derailleur | Shimano Acera, 8-speed |
| Shifter | 8-speed trigger shifter |
| Cassette | 12–32T, 8-speed |
| Chainring | 52T |
| Brakes, wheels and suspension | |
| Brakes | TEKTRO hydraulic disc brakes |
| Tires | Kenda 26 × 2.4-inch puncture-resistant tires |
| Fork | 80mm suspension fork with lockout |
| Seatpost | Aluminum suspension seatpost, 30mm travel |
| Cockpit and lighting | |
| Handlebar | Aluminum, 700mm wide, 31.8mm clamp |
| Stem | Aluminum, adjustable from 0–90 degrees |
| Front light | External 100-lux light |
| Rear light | Integrated rear light with turn signals and brake light |
Size and fit
The Carbon Atom is offered in one adjustable size for riders approximately 5'3" to 6'3". Its step-through frame and 17-inch standover height make mounting easier.
| Recommended rider height | 5'3"–6'3" |
|---|---|
| Top tube length | 599mm / 24" |
| Maximum seat height | 1,000mm / 39" |
| Minimum seat height | 850mm / 33" |
| Overall length | 1,830mm / 72" |
| Wheelbase | 1,118mm / 44" |
| Standover height | 440mm / 17" |
Frequently asked questions
What type of e-bike is the Urtopia Carbon Atom?
It is a carbon-frame step-through electric bike for commuting, comfort, utility riding, pavement, maintained gravel paths and recreational all-road use.
How powerful is the motor?
The rear hub motor is rated at 750W, reaches up to 1,250W peak power and delivers 90Nm of torque.
How far can the Carbon Atom travel?
Urtopia estimates up to 95 miles of pedal-assist range under favorable conditions. Actual range varies with terrain, speed, temperature, rider and cargo weight, tire pressure and assist level.
Does it have a removable battery?
Yes. It uses a removable 835Wh LG lithium-ion battery that can be charged on or off the bike.
Does it have a throttle and torque sensor?
Yes. The throttle provides assistance up to 20 mph, while the torque sensor adjusts pedal assistance in response to rider effort.
Is the Carbon Atom UL certified?
The e-bike system is certified to UL 2849 and the removable battery is certified to UL 2271.
Shipping
Ready to ship in 2 days.
Return Policy
Our regular policy applies, please check our return policy for more details.