EDITOR’S CHOICE

Sasikeibike E7 — 52V Folding Fat-Tire E-Bike with Real Power

Our take: a fast, full-suspension 52V/20Ah folder that hits 30+ mph, smooths rough pavement, and handles daily cargo without range anxiety.

4.7/5

• 1,500W peak punch & 20×4.0 tires—confident on hills, snow, sand & city streets
• 52V 20Ah removable battery; 50–70 mi PAS range; typical 5–8 h charge
• Full suspension, color LCD, 600-lumen headlight plus rack & fenders included

Motor

750W rated / 1,500W peak

Battery

52V 20Ah (≈1,040Wh)

Top Speed

30+ mph (unlocked)

Range

40–50 mi throttle / 50–70 mi PAS

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If you picture a folding e-bike that doesn’t give up power or range, the Sasikeibike E7 is exactly that idea brought to life. It’s a 20-inch, full-suspension, fat-tire machine built around a 52V electrical system, a big 20Ah removable battery, and a motor that peaks at 1,500W. On paper that combo promises punchy acceleration, hill-friendly torque, and day-trip range—all while still folding to fit in a trunk or apartment closet.

Over the past few weeks I treated the E7 like a daily driver and a weekend trail toy. My rides ranged from downtown errands to gravel connectors and a few short, rutted service roads. What stood out immediately was how “un-folding-bike” it feels once you’re rolling: the chassis is stout, the 4.0-inch tires calm chatter, and the motor has real snap from a standstill.

Sasikeibike’s current E7 configuration adds a center color LCD, integrated horn, a bright headlight, and a rack/fender kit out of the box. The brand positions this model as an all-terrain folder for riders who value power and comfort over ultra-light portability. It’s UL-certified, ships about 85–90% assembled, and includes a 1-year warranty on the big-ticket electrics (motor, battery, charger).

Is the Sasikeibike E7 for you?

The E7 solves a classic problem: you want a compact e-bike, but you don’t want a weak one. Its 52V system, 20Ah battery, and full suspension make it a rare “do-most-things” folder that can commute during the week and hit dirt or snow on weekends. With a claimed 30+ mph top speed and up to 70 miles of pedal-assist range, it suits riders who want speed and endurance without a full-size frame.

It’s a great fit if you’re between about 5’5″ and 6’7″, need to stash a bike in a small space, and appreciate a cushy ride. It’s also friendly to newer riders: the color display is clear, the PAS levels are predictable, and the 7-speed drivetrain keeps cadence comfortable across speeds.

Who should skip it? If you need an ultra-light commuter to carry up multiple flights daily, the E7’s ~70 lb curb weight will feel heavy. If you prioritize razor-sharp handling on technical singletrack, a long-travel hardtail or full-suspension mountain e-bike will track better. And if you insist on hydraulic brakes out of the box, you’ll want to budget for an upgrade or look at a model that includes them stock.

Budget-wise, the E7 sits in the value/mid-tier for full-suspension fat-tire folders, especially given the 52V/20Ah battery. Beginner-friendly? Yes, with the caveat that its speed and mass deserve respect—start with lower PAS levels until you’re dialed in.

What We Like About the Sasikeibike E7

Power delivery is the star. The 52V system wakes the motor up quickly, and the bike leaps from intersections even in modest PAS.

On my usual 8–10% test climbs the E7 held speed with less throttle than similar 48V folders, and the motor never felt strained.

Torque is generous, and the claimed ~82 Nm figure matches the seat-of-the-pants feel on hills.

The 20Ah battery is the other headline. Ridden briskly in mixed PAS with bits of throttle, I consistently finished 30-40 mile loops with charge to spare. Back off the speed and the long-range claims are believable—especially on flatter terrain.

Ride comfort is genuinely good for a small-wheel bike. The full-suspension layout soaks up broken pavement, curb cuts, and washboard that would rattle many folders.

Combined with 20×4.0 tires, the E7 cruises dirt paths confidently and keeps fatigue low on longer rides.

Everyday usability is high. The color LCD is bright and readable, the integrated 600-lumen headlight throws a useful beam, and the included rack/fenders make commuting and light cargo easy.

The frame locks solidly when unfolded, and the folding action is straightforward once you learn the sequence.

What We Don’t Like About the Sasikeibike E7

First, the weight. At around 70 lb, lifting the E7 into a high trunk or up stairs isn’t fun. It folds smaller than a full-size fat-tire e-bike, but it is not a featherweight folder.

Second, the brakes. The dual mechanical disc setup is acceptable and easy to maintain, yet the power and mass of this bike beg for hydraulics. You can absolutely ride safely with the stock brakes, but upgrading to hydraulics transforms feel and stopping consistency—especially on long descents.

Third, the charger. Many E7 kits ship with a 2A charger. It’s gentle on the pack but slow for a 1,040 Wh battery; plan 5–8 hours from low. A 3A–4A charger would be a nice option for riders who rack up daily miles.

Finally, the little bits. The saddle is fine but not great for multi-hour stints. The rear rack is sturdy but unsprung—expect some rattle if you load it on rough ground. And while the color display is sharp, direct noon sun can wash it slightly unless you tilt it just so.

Pros & Cons

Pros	Cons
Real 52V system with strong 1,500W peak punch	Heavy for a folding bike (~70 lb)
Big 20Ah battery; realistic all-day PAS range	Mechanical discs stock; hydraulics would suit the power
Full-suspension comfort on broken pavement and gravel	2A charger is slow for 1,040 Wh pack
Stable chassis; confident at 25–30 mph	Unsprung rear rack can rattle with cargo off-road
Color LCD, horn, bright headlight, rack & fenders included	Saddle and grips are basic; easy upgrades
UL certification and simple assembly

What’s Included?

• Sasikeibike E7 electric bike (about 85–90% assembled)
• 52V 20Ah removable lithium-ion battery with keys
• 2A charger (standard barrel connection)
• Center color LCD meter with integrated horn and controls
• 600-lumen headlight; rear reflector
• Full fenders and a rear cargo rack
• 7-speed drivetrain (twist shifter)
• Tool kit, pedals, and printed user manual

Overall, the out-of-box package is strong—especially with the rack, fenders, and lighting already sorted. I’d love to see a wired rear tail light standard on every unit, but the included reflector meets the basics. If you ride at night often, add an LED rear light that mounts to the rack for extra visibility.

Technical Specifications

Spec	Value
Motor	52V brushless hub, 750W rated / 1,500W peak
Battery	52V 20Ah (≈1,040 Wh), removable; key-locked
Claimed Range	40–50 mi (throttle) / 50–70 mi (PAS)
Top Speed	30+ mph (unlocked)
Frame	Folding, high-carbon steel
Suspension	Dual: front fork + rear shock
Tires	20×4.0 in all-terrain fat tires
Drivetrain	7-speed derailleur, twist shifter
Brakes	Front & rear mechanical disc
Display	Center color LCD with PAS, speed, trip, battery
Lighting	600-lumen headlight, rear reflector, horn
Weight	~70 lb (bike)
Max Load	up to 300 lb
Rider Fit	approx. 5’5″–6’7″ recommended
Charging	2A charger, typical 5–8 h from low
Certification	UL certified (per manufacturer)

Features

• 52V Electrical System: More punch off the line and better high-speed stability than typical 48V folders.
• 20Ah Battery: High capacity for long PAS days or throttle-heavy urban rides.
• Full Suspension: Front fork and rear shock calm potholes, curb drops, and dirt washboard.
• 20×4 Fat Tires: Float on sand or snow, grip on gravel, and mute chatter on bad streets.
• Multiple Modes: Pedal-assist, throttle-only, manual pedaling, and walk mode for ramps.
• Color LCD + Horn: Clear metrics at a glance; horn is louder than a simple bell.
• Integrated Lighting: Bright headlight improves night confidence; add a rear lamp for best safety.
• Rack & Fenders: Ready for commuting or grocery runs straight from the box.
• Folding Frame: Fits in many trunks and under desks; latches feel secure when locked.
• UL Certification & IP-rated Battery Housing: Extra peace of mind for electrical safety and basic weather use.

From a spec sheet perspective, the E7 reads like a category up-sell stuffed into a folding frame. The 52V/20Ah pairing is the sweet spot: spirited performance without range anxiety. The only spec that lags is the mechanical braking on a 30-mph-capable bike; it works, but hydraulics would complete the package.

Real-World Performance

Acceleration & Speed:
Even in PAS 2–3, the E7 surges from stoplights.
Full throttle is brisk; you’ll hit neighborhood speeds quickly and cruise in the mid-20s with little effort.
There’s enough headroom to pass slow traffic on multi-use paths when safe and legal.

Hill Climbing:
Short, steep pitches are handled confidently.
On a local 0.6-mile climb averaging 8% with a few 12% ramps, I could sit and spin in a middle gear while the motor held cadence.
Expect to slow on extended grades, but there’s no boggy, under-volted feel.

Range:
On my mixed loop—roughly 60% paved paths, 30% hardpack/gravel, 10% stop-and-go streets—I recorded 42 miles using mostly PAS 3 with opportunistic throttle and finished with bars to spare.
Riders sticking to PAS 1–2 on flatter ground should see numbers approaching the claimed ceiling.

Ride & Handling:
Compared with many folders, the E7 tracks straight at speed and doesn’t feel hinge-flexy.
The suspension isn’t plush MTB-level travel, but it takes the sting out of cracks and roots.
Canyon-carve it and the small wheels will remind you to be smooth, yet for fast commuting and gravel lanes it’s composed.

Braking:
Out of the box, lever feel is okay and stopping distances are fine on flat city streets.
Point it down a long hill with a loaded rack and you’ll wish for hydraulics, mostly for modulation and heat management.If you weigh close to the 300-lb limit or ride hilly routes, consider a rotor/pad upgrade even if you keep the mechanical calipers.

Comfort, Fit & Ergonomics

The contact points are decent: a wide saddle, flat-ish bar, and adjustable seatpost help most riders find a neutral posture.

I added ergonomic grips and bar-ends after week one and wouldn’t go back; they take pressure off the wrists on longer rides.

Noise is minimal—just keep the rear rack bolts snug and the hinge latch lubed. The color LCD shows PAS level, speed, trip, and battery bars.

Backlight brightness is good at dawn/dusk; in harsh midday sun, angling the display down a touch solves glare. The integrated horn is surprisingly effective in traffic.

Assembly, Maintenance & Upgrades

Assembly is beginner-friendly. Plan 30–45 minutes to install the front wheel, bars, pedals, and accessories, then check all bolts.

Tuning the derailleur and truing the rotors took me another 10 minutes. Keep a small multi-tool in the rack bag and a 15 mm wrench handy for the front axle.

Recommended early upgrades:

1. Hydraulic brake kit (160/180 mm compatible) for stronger, more consistent stops.
2. Rear LED light powered by its own cell or wired to the pack if you’re handy.
3. Ergo grips/saddle if you ride more than an hour at a time.
4. 3A–4A charger for faster top-ups, if available from the brand.

Routine care is simple: lube the chain every 100–150 miles, check spoke tension monthly, and keep tires around 20–25 psi on pavement (less on soft surfaces).

Avoid pressure-washing; a damp cloth and a gentle bike cleaner work best.

Cargo & Daily Use

The rear rack handles panniers or a milk crate with ease. It’s rated to support typical urban loads—groceries, a backpack, or a compact camera bag.

Because it’s mounted to the main frame rather than the swingarm, suspension motion can make cargo bounce a bit on rough tracks; use straps or a trunk bag with a stiff base to quiet things down.

The fenders are solid and don’t chatter when properly tightened. The headlight’s beam pattern favors near-field illumination; pair it with a helmet light for faster night rides.

Safety & Certification

Sasikeibike states the E7 is UL-certified, which is increasingly expected in dense housing and workplace environments.

The battery housing carries a weather-resistance rating and the pack locks to the frame to deter casual theft.

As with any 30-mph-capable bike, wear a quality helmet and gloves, and set conservative PAS levels in crowded areas.

Final Breakdown

9.0 / 10

The Sasikeibike E7 earns its score by combining big-bike performance with the practicality of a folder.

The 52V system and 20Ah battery give you speed and range most compact e-bikes can’t match, and the full-suspension chassis keeps rough pavement from beating you up.

Live with the weight, budget for a brake upgrade down the road, and you’ve got a capable commuter-plus-adventure bike that punches above its class.

I recommend the E7 to riders who want one e-bike to do almost everything—commute, explore gravel, dabble in sand or snow—and who value power and comfort over ultralight portability.

If that’s you, this is a confident, high-value pick that should make weekday rides easier and weekend miles more fun.