FREESKY Rocky Pro A-320 Step-Through Electric Bike
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FREESKY Rocky Pro A-320 – Powerful Step-Through Electric Bike
The FREESKY Rocky Pro A-320 combines powerful off-road performance with the accessibility of a compact step-through frame. Its low frame makes mounting and dismounting easier, while the wide fat tyres, full suspension and responsive torque sensor provide comfort and control across varied terrain.
A high-output rear hub motor produces up to 2,500W peak power and 120Nm of torque. It is supported by a large 48V 25Ah Samsung or LG-cell battery, giving the Rocky Pro the capacity for longer rides and demanding routes.
With four-piston hydraulic brakes, upgraded Shimano 8-speed gearing and both front and rear suspension, the Rocky Pro is designed for riders who want serious performance without the size and high crossbar of a traditional electric mountain bike.
Important UK Legal Notice
The unrestricted motor output, throttle operation and maximum assisted speed of this model exceed the requirements for an electrically assisted pedal cycle in the UK.
It is intended for use on private land with the landowner’s permission. It must not be used on UK public roads, cycle paths, pavements or other public places unless it has been appropriately registered, insured and approved for road use.
Key Features
- Accessible Step-Through Frame – The low-frame design makes getting on and off the bike easier and more comfortable.
- Up to 2,500W Peak Power – A high-output rear hub motor provides strong acceleration and climbing performance.
- 120Nm of Torque – Delivers confident power for hills, loose surfaces and challenging terrain.
- Torque and Cadence Sensors – Responsive assistance adjusts according to pedalling input while maintaining smooth power delivery.
- 48V 25Ah Samsung or LG-Cell Battery – A high-capacity removable battery designed for longer journeys.
- Manufacturer-Stated Range of 45–90 Miles – Actual range will depend on terrain, rider weight, assistance level and riding conditions.
- Full Suspension System – A 120mm oil-sprung front fork and dual-air rear suspension help absorb bumps and impacts.
- Four-Piston Hydraulic Brakes – Front and rear hydraulic brakes with 180mm rotors provide strong, controlled stopping power.
- 20″ × 4″ Fat Tyres – Wide tyres improve grip, stability and comfort across mixed terrain.
- Shimano 8-Speed Gearing – Upgraded drivetrain provides smooth and accurate gear selection.
- Thumb Throttle – Provides direct motor power when used where legally permitted.
- Colour LCD Display – Shows speed, mileage, battery level, lighting and five pedal-assistance levels.
- Integrated Indicators – Handlebar-operated turn signals improve visibility and communication.
- High Load Capacity – Designed to carry a combined rider and cargo load of up to 181kg.
Technical Specifications
| Specification | Details |
|---|---|
| Motor | High-output rear brushless hub motor |
| Peak Motor Output | Up to 2,500W |
| Maximum Torque | 120Nm |
| Battery | 48V 25Ah removable lithium battery |
| Battery Cells | Samsung or LG |
| Battery Certification | UL 2271 |
| Electric-Bike System Certification | UL 2849 |
| Manufacturer-Stated Range | 45–90 miles / 72–144km |
| Pedal Assistance | Five levels |
| Sensors | Torque and cadence sensors |
| Throttle | Thumb throttle |
| Gearing | Shimano 8-speed |
| Brakes | Front and rear four-piston hydraulic disc brakes |
| Brake Rotors | 180mm |
| Front Suspension | 120mm oil-sprung suspension fork |
| Rear Suspension | Dual-air rear shock |
| Tyres | 20″ × 4″ fat tyres |
| Display | Colour LCD display |
| Frame | Upgraded 6061 aluminium |
| Chain | KMC |
| Charger | 3A smart charger with UK-compatible cable |
| Bike Weight | Approximately 35kg |
| Maximum Load | 181kg |
| Kickstand | Adjustable heavy-duty aluminium |
| Available Colours | Black, Blue, Green and Red |
Range figures are supplied by the manufacturer and are not guaranteed. Actual range will vary according to rider weight, terrain, weather, tyre pressure, battery condition, assistance level and riding style.
Size and Geometry
The compact step-through frame is designed for riders approximately 155–180cm tall.
| Measurement | Size |
|---|---|
| Recommended Rider Height | 155–180cm / 5′1″–5′11″ |
| Recommended Inseam | 63.5–88.9cm / 25″–35″ |
| Total Length | 171.9cm |
| Wheelbase | 116.3cm |
| Total Height | 103.9cm |
| Minimum Seat Height | 78cm |
| Maximum Seat Height | 94cm |
| Reach | 47cm |
| Front-Centre | 71.6cm |
| Chainstay Length | 45cm |
What’s Included?
- FREESKY Rocky Pro A-320 electric bike
- 48V 25Ah removable battery
- 3A smart charger with UK-compatible cable
- Front and rear mudguards
- Pedals
- Assembly tools
- User manual
Assembly
The bike is delivered largely assembled. Some final assembly and safety checks will be required before riding, which may include fitting or aligning the front wheel, handlebars, pedals and accessories.
All fixings, brakes, tyre pressures and electrical connections should be checked before the first ride. If you are not confident completing these checks, we recommend using a qualified cycle technician.
Warranty
For Rocky Pro purchases from Rocket Ebikes, FREESKY’s confirmed dealer warranty covers the battery, motor, controller and charger for 18 months, and the listed other components for 12 months. Please read the Warranty tab for the covered parts and exclusions.
Warranty claims require proof of purchase and may require photographs or videos showing the reported problem. Labour and installation charges are not automatically covered unless approved by FREESKY in advance.
Please contact Rocket Ebikes first if you experience a problem, and we will help you through the manufacturer’s warranty process.
For full delivery information, please see our Shipping & Delivery Policy.
Change-of-mind e-bike returns: customer is responsible for the direct return/collection cost, currently estimated at a maximum of approximately £200 per bike for UK mainland returns. See Returns Policy for full details