Everything You Need to Know About The Simple Step Thru 20" 500W Electric bike from sixthreezero!

Measurements, Weight, Features, Fit Guide (4'11" to 6'2"), and Why This Might Be the Most User-Friendly E-Bike You Can Buy

If you’ve ever considered buying an e-bike but hesitated because of weight, complexity, or intimidation factor, you’re not alone. Many riders want electric assistance—without committing to a heavy, bulky bike that’s hard to move, hard to mount, or awkward to transport.

That’s exactly the problem the sixthreezero Simple Step-Through 20” 500W Electric Bike is built to solve.

This model is designed around a very specific promise: make electric riding easy. Easy to get on and off. Easy to lift. Easy to store. Easy to adjust. Easy to ride—whether you’re 4'11" or well over 6 feet tall.

In this complete guide, we’ll walk through:

• The Simple Step-Through 20” e-bike’s exact measurements and weight
• Why its 9-inch step-over is a standout feature
• How its compact design improves control and confidence
• Key features: motor, speeds, assist levels, throttle, battery, range
• Real-world transport advantages (folding handlebars + folding pedals)
• A detailed fit and sizing breakdown for riders from 4'11" to 6'2"
• Who this bike is best for—and who should consider the 26” version instead

The Simple Step-Through 20” is a compact, lightweight, low-step electric bike designed for riders who want a comfortable, approachable e-bike experience.

It’s especially appealing if you:

• Want an e-bike that doesn’t feel heavy
• Need an ultra-low frame that’s easy to mount
• Plan to lift or transport your e-bike often
• Prefer a compact wheel size that feels controlled and stable
• Want both pedal assist and throttle options

Let’s start with the number most riders care about immediately: weight.

According to the measurements shown:

• 55 lbs with the battery installed
• 47 lbs with the battery removed

For a two-wheel e-bike, that’s genuinely light—especially in a market where many e-bikes run 65–80+ pounds.

Why weight matters (more than most people admit)

A lightweight e-bike makes everything easier:

• Lifting into a car or onto a rack
• Maneuvering in a garage or apartment hallway
• Rolling the bike up small ramps
• Turning and controlling at low speed
• Handling the bike when the motor is off

Many riders don’t mind a heavier bike once they’re riding—but they absolutely feel it when they need to move it, store it, or transport it.

The Simple Step-Through 20” is built for those real-life moments.

This bike is not a full folding e-bike—and that’s intentional.

sixthreezero kept the frame rigid because it:

• Preserves frame feel and stability
• Avoids the complexity and bulk of folding hinges
• Maintains a clean, comfortable ride geometry

Instead, the bike includes travel-friendly features:

• Folding handlebars
• Folding pedals

That combo makes a major difference when:

• sliding the bike into a hatchback
• storing it in tight spaces
• reducing width for transport

It’s a smart middle ground: compact and transport-friendly without turning the bike into a complicated folding mechanism.

This bike’s most attention-grabbing measurement is its step-through height:

Step-over height: 9 inches

That is exceptionally low—one of the most accessible step-through frames you’ll find on a modern e-bike.

Why a low step-over matters

A lower step-over:

• reduces strain on hips and knees
• improves confidence for new riders
• makes mounting safer when you have limited mobility
• helps riders who may feel unstable swinging a leg over a high frame

For many riders, this isn’t a “nice to have.” It’s the difference between riding comfortably and not riding at all.

Here are the key measurements pulled directly from the walkthrough, organized for quick reference.

Overall size

• Wheelbase (axle to axle): 39.5 inches
• Total length (front tire to back tire): 58 inches
• Length with handlebars turned (transport): 54 inches

That “handlebars turned” measurement is useful if you’re loading into a vehicle or trying to squeeze the bike into a tight storage space.

Handlebar measurements

• Handlebar width: 28.5 inches
• Handlebar stem height adjustment range: 3 inches
• Height to top of handlebars when folded down: 31 inches

This matters if you’re:

• fitting it upright inside a hatchback
• storing in a short-height storage area
• loading into an SUV trunk

Seat measurements

• Lowest seat height: ~29.5 inches
• Height of top of seat clamp: 26 inches

Additional useful clearances

• Frame clearance (under frame): ~7 inches
• Pedal-to-ground clearance: ~3.25 inches

Low pedal clearance is normal on compact bikes. It improves stability and ease of mounting but reinforces the importance of smart cornering—avoid aggressive pedaling mid-turn to prevent pedal strike.

Rack measurements

• Rear rack width: 7 inches

This is helpful for rack bags, baskets, and transport gear planning.

Pedal/crank positioning

• Crank to rear axle: 15.5 inches
• Crank to front axle: 24 inches
• Front of seat to handlebars: 18 inches
• Rear of seat to handlebar center: 28 inches

These numbers reinforce what you feel when you sit on the bike: it’s compact, upright, and easy to control.

Now to the riding experience.

Motor

• 500W rear hub motor
• Rear hub motors are popular for riders who want:
• smooth, predictable power delivery
• reliable performance
• straightforward maintenance

Top speed

• Up to 20 mph on throttle
• Up to ~21 mph on pedal assist

Pedal assist levels

• 5 levels of pedal assist (1–5)
• This gives you flexibility. Riders can choose:
• low assist for longer range
• higher assist for stronger acceleration or hills

Throttle

• Thumb throttle
• This is ideal for:
• starting from a stop smoothly
• riding without needing to pedal
• taking breaks when legs are tired
• casual cruising

Gearing

• 7-speed drivetrain
• Even on an e-bike, gearing matters because it:
• improves hill climbing efficiency
• helps you keep a comfortable pedaling cadence
• reduces strain on the motor and battery when used properly

This bike uses a:

• 48V 10.4Ah battery
• With an “up to” range often cited around:
• up to 50 miles depending on conditions

But range depends heavily on:

• rider weight
• terrain (hills vs flat)
• wind resistance
• tire pressure
• how much throttle you use
• pedal assist level (1–5)

As a general rule:

• More throttle = less range
• Lower assist + consistent pedaling = more range

For most riders, the real win here is not chasing a perfect mileage number—it’s having a battery that supports practical use for errands, recreation, and daily rides without range anxiety.

A 20” e-bike often gets labeled as “small.” But the Simple Step-Through is designed to accommodate a wide range of riders because of two key adjustability points:

1. Quick-release seatpost
2. Adjustable handlebar stem (height and reach flexibility)

That means riders can dial in:

• leg extension
• reach to the handlebars
• upright posture vs slightly more stretched position

The most valuable part of the transcript is the real-world fit demonstration—because sizing charts don’t always capture how a bike actually feels.

Shorter riders (4'11"–5'2")

• 4'11" / 24" inseam: Fit is possible, but the seat may feel slightly high without additional adjustment; handlebars feel comfortable and upright.
• 5'0"–5'2": Consistently strong fit range with seat height adjusted down and handlebars brought closer.

Key takeaway: this bike is one of the most approachable e-bikes for shorter riders because the step-over is extremely low and the frame feels manageable.

Mid-range riders (5'3"–5'7")

This is the “sweet spot” zone where:

• seat height adjustments become straightforward
• handlebars naturally align with arm length
• posture remains upright and relaxed

Riders in this range tended to report:

• comfortable reach
• good foot positioning
• confident upright posture

Taller riders (5'8"–6'0")

The bike still works well, but as riders approach 6 feet:

• seat height approaches the upper limit
• leg extension becomes more sensitive to inseam length

Notably, a 6’0 rider with a ~33” inseam still found it comfortable with seat at max.

Very tall riders (6'1"–6'2")

At this point, the deciding factor becomes inseam and how much pedaling the rider plans to do.

• If a rider has 33" inseam or below, the fit can still be workable
• Above that, leg extension can feel cramped, especially during longer pedaling sessions.

The practical recommendation shown:

Riders over ~6’0 or with long inseams may prefer the 26” version for better leg extension—especially if they plan to pedal frequently rather than rely on throttle.

This model is an excellent choice if you want:

A non-intimidating e-bike

Its low step-over, compact frame, and manageable weight make it approachable for new riders and returning riders.

Something easy to transport

At 55 lbs with the battery and under 50 lbs without, plus folding bars/pedals, it’s a strong option for hatchbacks, SUVs, and garage storage.

A practical everyday e-bike

Errands, short commutes, neighborhood rides, bike paths—this bike fits that lifestyle well.

A comfortable upright ride

The relaxed posture and adjustable bars make it feel stable and easy on the body.

You may want the 26” version if:

• You’re consistently above 6’0
• Your inseam is over ~33 inches
• You plan to do longer rides with consistent pedaling
• You want more natural leg extension and cadence at speed

The 20” version is compact and fun—but the 26” is likely the better match for tall riders who want maximum pedaling comfort.

This bike’s value isn’t just the 500W motor or the battery size—it’s the total experience:

• One of the lowest step-through heights available
• One of the lightest e-bikes in its category
• Adjustable enough to fit a surprising range of riders
• Compact and easy to transport without a complex folding frame
• Comfortable, upright, confidence-building ride geometry

For riders who want an e-bike that feels simple, manageable, and genuinely user-friendly, the Simple Step-Through 20” makes a strong case.

It’s the kind of e-bike that encourages you to ride more often—because it removes the friction that keeps many bikes parked.

It’s your journey. Your experience. Enjoy the ride.