Jasion EB5 Roamer ST 1200W Step-Through Cruiser Electric Bike

The Jasion EB5 Roamer ST is a step-through electric bike built for easy mounting and everyday urban commuting. Its low-step aluminum frame, front suspension fork, and 26 x 1.95-inch puncture-resistant tires with reflective spoke strips are designed to keep rides smooth and visible across paved roads and uneven city surfaces alike. The ST shares the EB5 Roamer platform's focus on practical, everyday transportation, in a lower, easier step-through frame.

A 1,200W peak brushless hub motor delivers up to 60 N·m of torque, using a sine-wave controller for smooth, quiet acceleration paired with five adjustable pedal-assist levels and a thumb throttle for direct motor control. The 48V 11Ah battery uses 18650 lithium cells in a spring-loaded, quick-release housing that's IPX6 waterproof, so it can be swapped out for charging indoors in about 4 to 5 hours. Riders can expect a stated top speed of 28 mph and a maximum range of up to 62 miles, with a Shimano 7-speed drivetrain handling gear changes across varied road conditions.

Braking comes from a mechanical disc brake system, while the 3.1-inch front suspension fork helps absorb bumps from potholes and cracked pavement. The EB5 Roamer ST's lighting system includes an LED headlight, rear taillight, brake light, and left and right turn signals that stay operational even when the other lights are switched off — all controlled from the handlebar alongside the pedal-assist levels and horn. A chain guard helps keep the drivetrain protected from rain, mud, and chain oil, and the bike carries a maximum payload of 330 lbs.

Key Features

• Step-Through Frame: The low-step design provides easier mounting and dismounting for everyday use.
• Motor Performance: Produces up to 1,200W peak power and 60 N·m of torque.
• Quick-Release Battery: The spring-loaded battery design allows convenient removal and installation.
• Battery Protection: The battery features an IPX6-rated sealed design.
• Front Suspension: A 3.1-inch suspension fork helps absorb bumps and improve control across uneven surfaces.
• Urban Lighting System: Includes an LED headlight, rear taillight, brake light, and left and right turn signals.
• Independent Turn Signals: The turn signals can remain operational even when the other lights are switched off.
• Puncture-Resistant Tires: Equipped with 26 × 1.95-inch tires with reflective spoke strips for added visibility.
• Shimano Drivetrain: The Shimano 7-speed drivetrain supports shifting for different road conditions.
• Thumb Throttle: Provides direct motor assistance through handlebar-mounted control.
• Pedal Assistance: Includes five adjustable pedal-assist levels.
• Handlebar Controls: Allows operation of the assist levels, lights, horn, and turn signals.
• Chain Guard: Helps protect the chain from rain and mud while reducing contact with chain oil.

Specifications

• Motor: Brushless hub motor with up to 1,200W peak power
• Torque: 60 N·m
• Top Speed: 28 mph
• Battery: Quick-release 48V 11Ah battery
• Maximum Range: Up to 62 miles
• Charging Time: 4–5 hours
• Charger: Standard US 2.0A charger
• Controller: 48V 11A
• Throttle: Thumb throttle
• Sensor: Cadence sensor
• Pedal Assist: Levels 0–5
• Operating Modes: Pedal assist and throttle
• Drivetrain: Shimano 7-speed
• Brakes: Mechanical disc brakes
• Suspension: 3.1-inch front suspension fork
• Tires: 26 × 1.95-inch puncture-resistant tires
• Display: LCD display
• Lights: LED headlight, rear taillight, brake light, and left and right turn signals
• Maximum Payload: 330 lb
• Product Weight: 65 lb
• Folding Frame: No

Size Guide

• Size: One Size
• Recommended Rider Height: 5 ft 2 in to 6 ft 6 in
• A — Total Length: 66.9 in
• B — Handlebar Height: 44 in
• C — Wheelbase: 40 in
• D — Seat Tube Length: 10 in
• E — Maximum Seat Height: 32.2 in
• G — Chainstay: 18 in
• H — Top Tube Length: 23.6 in
• I — Head Tube Length: 3.9 in
• J — Handlebar Length: 25.6 in
• K — Wheel Diameter: 25.6 in

Included

• EB5 Roamer ST electric bicycle × 1
• Fenders × 2
• Rear rack × 1
• Charger × 1
• Toolkit × 1
• Pedals × 2
• Kickstand × 1
• User manual × 1

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