SUPER73-ZX Core
More Specs
Recommended Rider Height
5'1" - 6'8"
Local Pickup Option
We offer free assembly on local pickup orders.
The SUPER73-ZX Core is built for riders who want an easy, comfortable way to cover daily miles without breaking a sweat. With a 500w nominal motor and a thumb throttle, it delivers a smooth, confident ride up to 20 MPH, and the updated powertrain offers 20% more acceleration than previous ZX models, so pulling away from stops feels quicker and more responsive.
Power comes from a 480Wh (48V 10Ah) battery that's UL2271 compliant, giving riders an estimated 25-35 miles of range per charge and a 5 hour charge time. The aluminum frame keeps total bike weight to a manageable 62 lbs, while the rigid suspension and chunky VEE LZRD tires (4.5" front, 5" rear) are tuned for a stable, planted feel over everyday road conditions. Tektro mechanical brakes with 2-piston calipers provide reliable stopping power, and LED head and tail lights add visibility for commutes that run into the evening.
This single-speed setup is designed to be simple to live with — no gears to think about, just twist and go. It suits riders between 5'1" and 6'8", with a total weight limit of 325 lbs, making it a flexible option for most adults looking for a low-maintenance commuter. The Metallic Aluminum colorway rounds out the refreshed look for this latest version of the ZX. Suitable for riders 16 years of age and older.
Understand This eBike
Not sure what all the numbers mean? Here are the key things to know when comparing eBikes.
How far will this SUPER73-ZX Core really go?
SUPER73 rates this bike for up to 25-35 miles of range. Real-world range can vary based on pedal-assist level, rider weight, bike weight, terrain, speed, temperature, tire pressure, cargo, and throttle use.
Riders using mostly throttle or the highest assist setting will often see closer to about half of the advertised maximum range. Lower assist levels and more rider pedaling can significantly extend range.
How powerful is the motor on this SUPER73-ZX Core?
This bike uses a 500W Hub-Drive, with up to 1350W of peak output.
The motor's nominal power describes the power it is designed to provide continuously. Peak power is the higher amount it can deliver for short periods, such as accelerating from a stop or climbing a hill.
For eBike classification and legal compliance, nominal motor power is generally accepted as the relevant power figure rather than the short-duration peak power number. Regulations can vary by state and local jurisdiction, so riders should always follow the rules where they ride.
Higher motor power can provide stronger acceleration and better performance on hills or with heavier riders and cargo, but wattage alone doesn't tell the whole story. Torque, bike weight, gearing, wheel size, and the motor controller also affect how powerful an eBike actually feels.
What does the battery size mean on this SUPER73-ZX Core?
This bike uses a 48V, 10Ah, 480Wh battery. Battery capacity on eBikes is commonly measured in watt-hours (Wh). The higher the watt-hour number, the more energy the battery can store.
As a general rule, a larger battery can provide more riding range, but battery size alone doesn't determine how far an eBike will go. Bike weight, motor efficiency, assist level, throttle use, rider weight, terrain, speed, tire pressure, temperature, and cargo can all affect battery consumption.
Watt-hours also make it easier to compare battery capacity between different eBikes. For example, a 700Wh battery stores roughly 40% more energy than a 500Wh battery, even if the bikes use different battery voltages.
Keep in mind that a larger battery usually adds some weight and can take longer to charge, so the biggest battery isn't necessarily the best choice for every rider.
What eBike classes can this SUPER73-ZX Core be used as?
This SUPER73-ZX Core has an assisted top speed of 20 MPH and can be configured for Class 2 operation.
Under the commonly used three-class eBike system:
Class 1: Pedal assist only, with motor assistance up to 20 mph.
Class 2: Includes throttle operation up to 20 mph.
Class 3: Pedal assist up to 28 mph. Class 3 operation generally does not include throttle assistance.
Some eBikes can be configured for more than one class, allowing the rider to adjust the bike for different riding locations or regulations. eBike laws and trail-access rules vary by state and local jurisdiction, so riders should check the rules where they plan to ride.
What's the difference between torque and cadence sensors?
eBikes typically use either a torque sensor or a cadence sensor to determine how the motor responds while you pedal.
Torque sensors measure how hard you're pedaling and provide motor assistance in proportion to your effort. This generally creates a smoother, more natural, and more responsive riding experience. The harder you pedal, the more assistance the motor provides.
Cadence sensors primarily detect whether the pedals are turning. Once you begin pedaling, the motor provides assistance based largely on the selected assist level rather than how much force you're putting into the pedals.
Torque sensors are generally considered the more refined system and have become increasingly common on modern eBikes. Cadence sensors can still be useful for riders who prefer the motor to provide more assistance with less pedaling effort.
