48V 20Ah
The lowest-capacity option for customers whose regular routes do not require the added size and capacity of the extended configurations.
QS7 power
$1,089.99 USD
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QS7 power
$1,089.99 USD
Questions before you ride? Call (201) 252-2549 or email support@sismabike.us.
Long-range fat-tire performance
QS7 power for bigger plans
A high-output 48V platform built for longer routes, changing surfaces, and heavier everyday demands. Three battery configurations let you choose between practical capacity and maximum distance, while full suspension, wide tires, mechanical disc braking, and a seven-speed drivetrain support confident control.
1500WPublished peak motor output
90 N·mPublished maximum torque
Up to 150 miClaimed maximum range*
440 lbPublished maximum load
Choose your capacity
Three battery configurations
All active options are listed at 48V. Select capacity according to typical distance, assistance level, terrain, load, weather, and charging access.
48V 35Ah
A higher-capacity single option intended to provide more distance between charges than the standard configuration under comparable conditions.
48V 60Ah
The highest-capacity dual configuration and the option associated with the published maximum range of up to 150 miles under favorable conditions.
Charging-time clarification: the source specification publishes a general 4–6 hour figure and a 2–3A charger, but does not separate charging time by battery capacity. A larger-capacity configuration can require more time. Confirm the charger and expected charging time supplied with the exact option selected.
Control and comfort
Prepared for changing terrain
Key equipment is arranged around traction, impact control, visibility, braking, and flexible speed selection.
20 × 4.0-inch tires
Wide front and rear tires create a larger contact area for added stability and traction across pavement, gravel, packed paths, and other suitable surfaces.
Full suspension
An inverted aluminum front fork works with a central rear nitrogen shock to reduce the effect of bumps and uneven ground.
160 mm disc brakes
Front and rear mechanical disc braking provides familiar cable-operated serviceability and controlled deceleration when correctly adjusted.
Seven-speed drivetrain
Seven mechanical ratios help the rider adjust cadence and effort for starts, open stretches, and inclines.
Front and rear signals
A round white front light supports forward visibility, while equipped signals at both ends help communicate intended direction.
LED information display
The handlebar display keeps essential operating information visible while moving. Exact screen functions can vary by configuration.
Complete reference
Technical specifications
Performance
Motor48V brushless; published output up to 1500W
Maximum torque90 N·m
Maximum speedUp to 30 mph*
RangePublished 50–150 miles, depending on battery selection and conditions*
Maximum climbing claimUp to 30° under suitable conditions*
Maximum load440 lb total published limit
Published motor speed4,478 rpm
DriveChain drive with three-level zero-start setting
Electrical system
System voltage48V
Battery choices20Ah standard / 35Ah extended / 60Ah dual power
Charger outputPublished 2–3A
Charger input100–220V, 50–60Hz
Published charge time4–6 hours; confirm for selected capacity
DisplayLED display
Front lightingWhite round headlight
SignalsFront and rear turn signals
Thermal protectionIntegrated controller described as shutting off power during overheating
Water-resistance ratingIPX5; water-resistant, not waterproof
Frame, suspension and controls
Frame materialCarbon steel
Front tire20 × 4.0 in
Rear tire20 × 4.0 in
Front suspensionInverted aluminum fork
Front-fork dimensions40 mm diameter with 150 mm travel
Rear suspensionNitrogen shock absorber
BrakesMechanical disc system with 160 mm rotors
GearingSeven speeds
Chain specification116 links / 420 chain
Dimensions and fit
Recommended rider height160–195 cm / approximately 5 ft 3 in–6 ft 5 in
Handlebar width28.35 in / 72 cm
Overall height42.13 in / 107 cm
Minimum seat height29.92 in / 76 cm
Ground clearance14.17 in / 36 cm
Wheelbase64.96 in / 165 cm
Overall lengthNot stated in the reference specification
Product weightNot stated in the reference specification
Package contentsConfirm the packing list for the selected configuration before ordering
Safety documentation referenced
Battery documentationUL 2271 report referenced
Electrical-system documentationUL 2849 report referenced
Transport referencesMSDS, UN 38.3, UN 3171 and UN 3480 listed
ImportantRequest and review the applicable documents for the exact configuration before purchase if certification is a deciding factor.
Before the first trip
Setup and ownership basics
The published information describes approximately 90% pre-assembly. Final setup still requires careful inspection and correct adjustment.
Install the remaining parts
The seat, front wheel, and certain accessories are identified as the main installation steps. Follow the supplied manual and use the specified torque values.
Check before use
Verify wheel retention, tire pressure, steering, controls, brake alignment, fasteners, battery security, lights, and signals. Use a qualified technician if any step is unclear.
Use the supplied equipment
Charge in a dry, ventilated area away from heat and flammable materials. Do not use a damaged, wet, swollen, modified, or unusually hot battery or charger.
Questions answered
What customers should know
Quick answers to the points most likely to affect fit, use, charging, and ownership.
Which battery option should I choose?
Choose based on normal distance, terrain, assistance use, load, climate, charging access, and the added size or weight of higher-capacity equipment. The 20Ah option suits shorter routines, 35Ah adds capacity, and 60Ah is the dual configuration associated with the longest published range.
Will I always reach the published maximum range?
No. The 150-mile figure is a best-case claim associated with the largest battery configuration. Real distance changes with battery selection, rider and cargo weight, terrain, hills, wind, temperature, tire pressure, speed, stops, assistance level, and battery condition.
Does IPX5 mean it is waterproof?
No. IPX5 indicates resistance to water jets under specified test conditions; it does not permit submersion, pressure washing, or charging while wet. Follow the manual, protect electrical connections, and allow the system to dry before charging.
Is the published 30 mph available everywhere?
No. Local rules can restrict speed, power, throttle use, equipment, age, licensing, registration, and access to roads or paths. The customer is responsible for confirming and following the laws that apply where the product will be used.
How much assembly is required?
The source listing describes approximately 90% pre-assembly, with the seat, front wheel, and minor accessories remaining. Assembly quality directly affects safety, so follow the supplied instructions and arrange professional inspection when needed.
Where can I review purchase policies?
Coverage and claims are governed by the warranty policy. Eligibility for returns is explained in the refund policy, and delivery information appears in the shipping policy.
*
Performance figures are estimates or published maximum claims.
Range, speed, climbing ability, charging time, and stopping distance vary with configuration, total load, terrain, weather, temperature, tire pressure, maintenance, traffic, assistance setting, and operating style. Confirm the selected configuration before ordering, follow the supplied manual, wear appropriate protective equipment, maintain the product regularly, and obey all local requirements.
Verified riders
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Verified riders
Featured Reviews
The pedal assist kicks in very naturally…
J
🇺🇸
✓
EK6
Even at top speed on a flat road, the bike…
Wilson
🇺🇸
✓
C16
My friend who is a serious cyclist tried it…
Sheresa
🇺🇸
✓
EK6
The battery life on this e-bike is…
darkprince56
🇺🇸
✓
EK6 48V20AH 80 Miles 38MPH
First ride was amazing! This bike has some…
Judi
🇺🇸
✓
Mars700 48V20AH 80 Miles 28MPH
Loving the bike! Very small and compact and…
ChickieTendy
🇺🇸
✓
EK4 48V20AH/50AH 80 Miles 28MPH