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Thunder

Thunder Step-Thru Electric Bike

$1,800.00 CAD

~~$2,000.00 CAD~~ $1,800.00 CAD

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The Thunder Step-Thru Electric Bike is a practical, comfort-focused commuter e-bike designed for easy mounting, relaxed city riding, and everyday transportation. It features a 500W Bafang rear hub motor with up to 80 N·m of torque, paired with Samsung 48V battery options up to 20Ah and a manufacturer-listed range of up to 125 km, depending on battery configuration.

With a low step-through frame, 26" × 1.95" Kenda tires, MOZO front suspension, Tektro 180 mm mechanical disc brakes, Shimano 7-speed gearing, a thumb throttle, rear rack, and full fenders, the Thunder Step-Thru is well suited to commuting, errands, and comfortable recreational riding around Vancouver.

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Battery 48V 15Ah Samsung Li-ion 48V 20Ah Samsung Li-ion

Color Black White

Assembled, tuned & safety-checked before pickup

1-year local warranty · in-house service team

Free local pickup in Vancouver, or shipping across BC

Free installation: Ask us for FREE installation when you pickup your purchased item

Shipping & Returns

In-store pickup available. Local support and e-bike service are available through ProMechBC. Returns and exchanges are subject to store policy, product condition, and final-sale or special-order rules where applicable.

Fit & Sizing

Best for riders who want easier mounting, upright comfort, and a practical layout for commuting, errands, and everyday use.

View full details

Bafang 500W 48V G02 hub motor Motor power

Up to 100–125 km depending on battery Range per charge

Urban commuter class Top speed

Vancouver workshop Free local pickup — 1199 Grant St.

Why riders choose the Thunder Step-Thru

What makes it a comfort-focused step-through commuter e-bike.

Every figure below is labelled with where it comes from, so a manufacturer’s claim never reads as a measurement.

01 Power

Null, geared for gradient

Bafang Hub Motor 500W 48V G02 80 N.m. Watts set the ceiling; what you feel on a grade is how much pulling power is available low in the range, where a climb from a standstill actually happens.

Vancouver is not a flat city, and a bike specified for one is obvious within a week. Assistance that holds its character on a sustained grade, rather than fading as the motor heats, is the difference between arriving comfortable and arriving determined never to take that route again.

500 WMotor

Any climbing claim assumes a rider putting in their share. A throttle-only ascent drains the pack far faster than the range figure suggests.

Null, geared for gradient — Thunder Step-Thru Electric Bike — Bafang Hub Motor 500W 48V G02 80 N.m

02 Range

How far, honestly

48V 15Ah Samsung Li-ion or 48V 20Ah Samsung Li-ion. The figure that shapes your week is not the maximum but the margin left at the end of an ordinary day, in the cold, with the lights on.

Range is the most quoted figure in this category and the least reliable, because it is measured in the conditions most favourable to it. What actually shapes your week is charge time and how much margin you have left at the end of a normal day — a pack you top up twice a week without thinking about it beats a bigger one you have to plan around.

Lithium packs lose capacity with age and with cold. A two-year-old battery in February will not do what a new one did in July, and no range figure on any page accounts for that.

How far, honestly — Thunder Step-Thru Electric Bike — range

03 Stopping

Null, and why it matters

Tektro Mechanical disc brakes - Tektro disc 180 mm, 26x1.95" tyres. Stopping distance is set by the contact patch as much as by the caliper: hardware can only ask for as much grip as the tyre has to give, which is why both are quoted here rather than just the one that sounds impressive.

Nobody shops on brakes and everybody remembers them. The right question is not how hard it stops on a dry test but whether the fifth hard stop feels like the first, in the rain, with luggage and a passenger-weight load on the rack.

26.3 kgWeight

Mechanical discs need the cable adjusting as the pads wear. It is a two-minute job and the difference between a good lever and a vague one, so do not put it off.

Null, and why it matters — Thunder Step-Thru Electric Bike — 26x1.95"

04 Comfort

Step-Thru frame, and what it means

Size: 73"x28"x42" LxWxH, Step-Thru frame. Fit decides whether a bike is still being ridden in month three, and it is the one specification a photograph cannot tell you — reach, standover and saddle height interact, and two riders of the same height with different inseams want genuinely different setups. It weighs 26.3 kg, which is worth knowing before you commit if it has to come up a flight of stairs or onto a bus rack at the end of the ride.

The frame is the one part you cannot upgrade later. Everything bolted to it can be changed as it wears or as your taste changes, which is why the material, the geometry and the honesty of the joins are worth more attention than the components hanging off them.

Step-ThruFrame
26.3 kgWeight

Height charts assume average proportions. Two riders at the same height with different inseams will want different setups, so treat any published range as a starting point and expect to move the saddle and bars.

Step-Thru frame, and what it means — Thunder Step-Thru Electric Bike — Step-Thru

05 Assist

Null

Gears: Shimano Tourney TX50R7CT Shifter Plus 7-Speed · Chain: KMC chain, Throttle: Thumb Throttle. Gearing decides what the motor is asked to do: the right gear on a climb keeps you spinning and keeps the drive unit cool and efficient, and the wrong one grinds through your knees and your range at the same time.

The drivetrain is what riders upgrade first and shop for last. Chain, cassette and pads are consumables on any bike and wear faster under assistance, so the practical question is not which groupset is fitted but how cheaply and quickly it can be serviced when it wears — which is a question about your shop, not your bike.

Pedal-assist levels are a controller setting, not a measurement. What one brand tunes into its middle level another spreads across two, so treat the count as a range of options rather than as a spec you can compare across bikes.

Null — Thunder Step-Thru Electric Bike — Throttle: Thumb Throttle

Thunder Step-Thru Comfortable Commuter Electric Bike

The Thunder Step-Thru Electric Bike is designed for riders who want easy access, dependable electric assistance, and a comfortable upright riding position for everyday city use.

A 500W Bafang rear hub motor delivers up to 80 N·m of torque, providing smooth support for starts, hills, and daily commuting. Samsung 48V battery options provide extended riding range, with the larger 48V 20Ah battery rated for up to 125 km under suitable conditions.

Easy Step-Through Design

The low step-through frame makes mounting and dismounting easier, making the Thunder a practical option for commuters, casual riders, and anyone who prioritizes comfort and accessibility.

At approximately 58 lb, the bike is substantial enough to feel stable while remaining manageable for everyday urban use.

Suspension, Tires and Braking

A MOZO adjustable front suspension fork with lockout helps absorb bumps and rough pavement, while 26" × 1.95" Kenda tires provide efficient rolling and predictable handling for city streets and paved paths.

Front and rear Tektro mechanical disc brakes with 180 mm rotors provide straightforward stopping control for everyday riding.

Shimano Gearing and Everyday Utility

The Thunder Step-Thru uses a Shimano 7-speed drivetrain together with pedal assist and a thumb throttle, giving riders flexibility for hills, starts, and longer routes.

A rear rack, full fenders, front and rear lighting, kickstand, and bell make it ready for commuting and errands straight from the shop.

Buy the Thunder Step-Thru in Vancouver

For riders looking for a Thunder Step-Thru Electric Bike in Vancouver, ProMechBC provides local pickup, product support, service, repairs, and access to experienced electric-bike technicians.

The Thunder Step-Thru is a strong choice for riders who want comfort, easy mounting, useful range, and practical commuter features in one straightforward e-bike.

Full specification

Every number, in one place.

Pulled straight from the product record — if it changes on the bench, it changes here.

Power

Motor position	Bafang 500W 48V G02 hub motor
Motor power (nominal)	500W hub motor
Motor torque	80 N·m
Top assisted speed	Urban commuter class
Pedal assist levels & throttle	Throttle: Thumb Throttle
Drivetrain / gears	Gears: Shimano Tourney TX50R7CT Shifter Plus 7-Speed · Chain: KMC chain

Battery & charging

Battery capacity	48V 15Ah or 20Ah Samsung Li-ion battery
Range (manufacturer claim)	Up to 100–125 km depending on battery
Charging time	Approx. 6–8 hr
Battery removable	-

Safety

Brake system	Tektro mechanical disc brakes
Suspension / fork travel	MOZO adjustable preload fork
Tyre size	-
Lighting	Headlight: Yes
Tires	26 x 1.95 in Kenda tires

Dimensions & weight

Weight	58 lbs
Max total load	-
Frame size & standover	Size: 73"x28"x42" LxWxH

Design & connectivity

Frame material	Step-Thru

Certifications & compliance

BC legal class	-

Specifications are supplied by the manufacturer and verified by our workshop on arrival. We update this page when they change.

Customer Reviews

Owners put it best

verified riders have rated the Thunder Step-Thru Electric Bike. Unedited impressions from daily commutes, rain rides and hill climbs.

No reviews yet — be the first to review Thunder Step-Thru Electric Bike.

Loved by riders

What our customers say

Unedited reviews from riders across the Lower Mainland — and a few who crossed the border just to see us.

4.9

656 Google reviews · Read them all →

★★★★★

I drove all the way from Seattle to bring my daughter's scooter to ProMechBC and I could not be more pleased with both the repairs and the customer service. I will definitely be bringing the scooter North of the border when it needs some love.

Katie Barber

Posted on Google

★★★★★

Recently had an accident with my Apollo Go — luckily nothing major was damaged, but it still needed some repair and replacement parts. Service was great, and I got my scooter back within a week. :D

nw

Posted on Google

★★★★★

The service was incredibly fast, professional and efficient — they fixed my scooter wheel quickly and the quality of the repair was outstanding. Honest, reliable, professional and fast.

Amirreza Najmi

Posted on Google

Read all 656 reviews on Google

06 Owning it

Ride it home today — the rest is on us.

Ride now, pay later

Split it into predictable monthly payments — 0% APR on approved credit, no hidden fees.

Based on $1,800.00 at 0% APR. Rates from 0–19.99% APR. Subject to approval.

12-month warranty

A full year of coverage backed by our own technicians — plus lifetime service on everything we sell. No mailing it away, ever.

Price match guarantee*

Find the same product for less at an authorized Canadian dealer and we'll match it — you keep the local build, tuning and support.

Trusted local support

Bought here. Fixed here. By the people who built it.

Every ride leaves our bench assembled, torqued to spec and safety-checked — and stays local if it ever needs attention.

In-house assembly & safety check before pickup
Warranty work handled by our own technicians
Genuine parts stocked, plus a free 30-day tune-up

Book a service visit

ProMechBC Workshop

1199 Grant St, Vancouver, BC V6A 2J7

Open today · 10:00 – 18:00

Get directions (604) 200-4166

< 24 h Reply to service requests
1 year Local warranty, in-house
Free 30-day first tune-up

Support

Frequently asked questions

What motor does the Thunder Step-Thru use?

The Thunder Step-Thru uses a 500W Bafang rear hub motor rated for about 80 Nm of torque. The low step-through frame makes the bike easy to mount while retaining enough motor support for everyday commuting and moderate hills.

What is the range of the Thunder Step-Thru?

Thunder lists up to approximately 80 km with the smaller battery option and up to about 125 km with the 48V 20Ah battery under favourable conditions. Actual range varies with assist level, rider weight, hills, temperature, wind, and throttle use.

Who is the Thunder Step-Thru best for?

The Thunder Step-Thru is best for commuters, casual riders, and anyone who values easy mounting and an upright riding position. It is particularly practical for errands and daily city use because it includes a rear rack, fenders, and integrated lighting.

What battery options does the Thunder Step-Thru offer?

Thunder has current Step-Thru configurations with Samsung-cell 48V batteries, including 13Ah and 20Ah options. Battery availability can change, so confirm the exact capacity on the ProMechBC bike before purchase.

What brakes and suspension does the Thunder Step-Thru use?

The standard Thunder Step-Thru uses 180 mm Tektro mechanical disc brakes and a front suspension fork with adjustable preload and lockout. Production details can change, so confirm exact component branding on current stock if important.

Where can I buy or service the Thunder Step-Thru in Vancouver?

You can purchase the Thunder Step-Thru through ProMechBC in Vancouver, with local pickup when available and local support for setup, maintenance, and e-bike repairs. Contact ProMechBC to confirm current battery option and stock.

Ride safe & legal

Riding safely and legally in Vancouver

Know the local rules for e-scooters, gear up properly, and keep your ride maintained. Our team can walk you through everything at pickup.

Talk to a specialist

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Thunder Step-Thru Electric Bike