Michael Thompson
Electric bikes are taking the world by storm, but not all e-bikes are created equal. Enter the Spacewalk M6 Electric Bike—a dual-size fat-tire e-bike designed for both teens and adults, blending high performance with all-terrain versatility. Whether you’re hunting for a new commuter companion, a fun family adventure ride, or an e-bike that’s just as comfortable on city streets as on rugged trails, the Spacewalk M6 looks ready to deliver.
But does it really live up to the promise? After spending extensive time exploring both the 16” and 20” variants of the Spacewalk M6, I’m here to give you a no-nonsense, in-depth look at what this e-bike has to offer—its strengths, weaknesses, and who it’s truly built for.
What is the Spacewalk M6 Electric Bike?
The Spacewalk M6 is a fat-tire electric bike available in two frame sizes: 16-inch, ideal for riders under 5’2” (perfect for teens or smaller adults), and 20-inch, recommended for riders 5’5” and above. Both variants share a robust 750W brushless motor, a removable 48V 15Ah lithium battery, and a heavy-duty suspension setup—making the M6 equally at home on city streets, sandy beaches, grassy parks, or gravel trails.
Spacewalk, the manufacturer, is known for producing affordable, high-performance e-bikes with a focus on safety and comfort. The M6 represents their vision of a truly versatile electric bike for families—one that can handle daily commutes, recreational rides, and off-road adventures, while being accessible for a wide range of riders.
While the Spacewalk M6 hasn’t been on the market as long as some more established brands, it’s been quick to gain traction for its unique sizing options, practical features, and impressive value.
Is the Spacewalk M6 Electric Bike for You?
The Spacewalk M6 is designed to solve a very real need: finding an electric bike that isn’t “one size fits all.” If you’ve ever struggled to find an e-bike frame that fits a smaller teen or family member—or if you’re on the taller side and want something with serious legroom—the M6 has you covered. With two size options, it offers genuine comfort and control for riders who often get left out by most brands.
This e-bike is ideal for:
- Families looking for a matching set of e-bikes that suit both parents and teenagers.
- Adults who want a fat-tire bike for all-season commuting, off-road adventures, or simply for fun.
- Riders seeking a comfortable, shock-absorbing ride—thanks to its dual suspension, fat tires, and plush saddle.
- Anyone who wants a powerful motor, solid range, and robust safety features at a mid-range price.
Who might not find it ideal? If you’re looking for a super lightweight bike for carrying up lots of stairs, or you want an ultra-premium brand with advanced connectivity features, you may want to keep shopping. The M6 prioritizes performance, comfort, and value over being the lightest or most tech-advanced on the market.
Budget-wise, the Spacewalk M6 sits comfortably in the mid-range e-bike category—not bargain-basement cheap, but offering a lot more features and power than basic entry-level models. It’s also refreshingly beginner-friendly, with a simple control panel, 90% pre-assembly, and intuitive ride modes.
What We Like About the Spacewalk M6 Electric Bike
The most impressive thing about the Spacewalk M6 is its versatility. The dual-size frame option isn’t just a gimmick—it genuinely makes this model accessible to a wide range of riders. For families, it’s a game changer: teens can ride the 16-inch version, adults the 20-inch, and everyone gets the same features, safety, and power.
The 750W brushless motor is punchy and responsive. Whether you’re starting from a stop or climbing a steep hill, there’s plenty of torque to get you moving. The 21.7–24.9 MPH top speed (depending on the model) is fast enough to feel exhilarating, but not so wild that it becomes unsafe for beginners.
Battery life is another strong suit. With the 48V 15Ah lithium-ion battery, real-world range varies between 37 miles (pure electric) to 70 miles (pedal assist), which is more than enough for most commutes or weekend adventures. The removable design is a major convenience—charge the battery at your desk, in your garage, or even bring a spare for longer trips.
Ride quality on the Spacewalk M6 is outstanding for the price. The combination of 4 shock absorbers, fat 4” tires, and a large padded seat means bumps and rough surfaces are handled with ease. You get real comfort whether you’re riding over city potholes or beach sand.
Safety has clearly been prioritized. Both front and rear disc brakes are strong and predictable, and the M6 is UL2849 safety certified. It’s also loaded with useful features like front headlights, rear tail lights, brake indicators, and even turn signals—rarely seen at this price.
The cargo rack is rated to 55 lbs and is perfect for carrying groceries, work gear, or even your small dog. And the LCD display is easy to read, giving you real-time updates on speed, battery level, and distance traveled.
What We Don’t Like About the Spacewalk M6 Electric Bike
No product is perfect, and the Spacewalk M6 does have a few areas where it could be improved.
First, the weight. At 72 lbs (16″ version) to 85 lbs (20″ version), this bike is no featherweight. It’s not difficult to ride, but carrying it up stairs or loading it into a car trunk is a two-person job for most. For city dwellers in walk-up apartments, this might be an inconvenience.
Assembly is generally straightforward, but the included manual could be clearer, especially for first-timers. Some riders may need to spend extra time adjusting the brakes or aligning the wheels to get things perfect.
While the motor is strong and the battery reliable, the top speed is limited to just under 25 MPH (20″ version), which is standard but might not satisfy speed enthusiasts who want more thrill. The LCD display, while functional, isn’t as advanced as what you’ll find on higher-end e-bikes—don’t expect smartphone integration or navigation.
Finally, the bike’s size options are fantastic, but there’s a “gap” for riders in the 5’2” to 5’5” range. While you can choose either size, neither is a perfect match for this in-between height. It would be great to see a third frame size in future versions.
Pros & Cons
| Pros | Cons |
|---|---|
| Available in two frame sizes for teens and adults | Heavier than average e-bikes (72–85 lbs) |
| Powerful 750W motor with solid climbing ability | Assembly manual could be clearer |
| Long-range 48V 15Ah removable battery (up to 70 miles PAS) | LCD display is basic (no smartphone integration) |
| Advanced dual suspension and fat 4” tires for extra comfort | Not ideal for riders between 5’2″ and 5’5″ |
| Excellent safety features: UL certified, disc brakes, lights, signals | Top speed (24.9 MPH) may not satisfy thrill-seekers |
| Rear cargo rack holds up to 55 lbs | Large size/weight makes it tricky for small apartments |
| Easy to operate; beginner-friendly modes and controls | |
| 90% pre-assembled, with responsive after-sales support |
What’s Included?
- Spacewalk M6 Electric Bike (your chosen frame size: 16” or 20”)
- 48V 15Ah removable lithium-ion battery
- 750W brushless hub motor (pre-installed)
- Rear cargo rack (supports up to 55 lbs)
- LCD display with integrated control pad
- 2x front suspension forks
- 2x rear shock absorbers
- Large shock-absorbing saddle
- 4” fat tires (pre-installed)
- Front and rear disc brakes
- Integrated headlight and taillight with turn signals and brake indicators
- Horn
- Kickstand
- Shimano 7-speed drivetrain
- Tools and hardware for final assembly
- Owner’s manual
- Charging adapter
- Warranty and after-sales service information
Package Satisfaction:
The box is thoughtfully packed, with key components well protected. All major tools are included for assembly, though I recommend having a basic bike tool kit handy for fine-tuning. The only thing I’d have liked to see included is a bottle holder or a set of mudguards, but these are minor omissions. Overall, it’s a very complete package for a mid-range e-bike.
Technical Specifications
| Feature | 16” Model | 20” Model |
|---|---|---|
| Frame Size | 16 inches | 20 inches |
| Suitable Rider Height | Under 5’2” | 5’5” and above |
| Weight | 72 lbs | 85 lbs |
| Max Load Capacity | 264 lbs | 264 lbs |
| Motor | 750W brushless | 750W brushless |
| Battery | 48V 15Ah removable Li-ion | 48V 15Ah removable Li-ion |
| Max Speed | 21.7 MPH | 24.9 MPH |
| Range (PAS / Pure Electric) | 50 / 30 miles | 55 / 37 miles |
| Suspension | Dual (front & rear, x4) | Dual (front & rear, x4) |
| Tire Size | 16” x 4” | 20” x 4” |
| Shimano Gears | 7-speed | 7-speed |
| Brakes | Dual disc brakes | Dual disc brakes |
| Lighting | Headlight, taillight, turn signals | Headlight, taillight, turn signals |
| LCD Display | Yes | Yes |
| Charging Time | 4–6 hours | 4–6 hours |
| Pre-assembly | 90% | 90% |
Features
- Dual Frame Sizes: 16” for teens/shorter riders, 20” for adults/taller riders
- 750W High-Speed Motor: Max torque 60Nm, peak speed up to 24.9 MPH
- 48V 15Ah Removable Battery: Up to 70 miles in pedal assist mode, key-secured
- Fat 4” Tires: Excellent traction and stability on all terrains
- Advanced Suspension: 2x front, 2x rear shock absorbers + large shock seat
- Shimano 7-Speed Gears: Smooth shifting for various terrains and gradients
- Safety Package: UL2849 certified, dual disc brakes, bright headlights, taillight, turn signals, brake indicators
- LCD Control Display: Tracks speed, battery, distance, mode selection
- Rear Cargo Rack: Rated to 55 lbs, ideal for pets, groceries, or gear
- 3 Riding Modes: Pure electric, pedal assist, and pedal-only
- Quick Charging: 4–6 hours to full charge
- Beginner-Friendly: 90% assembled, easy controls, clear after-sales support
Opinion on Specs/Features:
The Spacewalk M6 offers an exceptional feature set for the price. Having a real choice in frame sizes, plus a beefy motor, huge battery, all-terrain fat tires, and a genuine suspension system is rare at this price point. The focus on rider comfort and family usability sets it apart from many single-size competitors. The only notable compromise is the weight, which is inevitable given the fat tires and heavy-duty frame.
Final Breakdown
Score: 9.1/10
The Spacewalk M6 Electric Bike is a fantastic option for families, teens, or adults looking for a safe, powerful, and comfortable e-bike that’s ready for both city commutes and weekend adventures. Its flexible sizing, punchy 750W motor, long battery life, and excellent ride quality are standout features that put it ahead of much of the mid-range e-bike market.
A couple of minor drawbacks, like the bike’s weight and a somewhat basic LCD display, are worth noting but don’t take away from the fact that this is a remarkably well-rounded package. The attention to safety—UL certification, strong disc brakes, and bright lights—make it especially appealing for parents and anyone riding in busy areas.
Do I recommend the Spacewalk M6?
Absolutely. If you want an electric bike that can genuinely fit different family members, or you need a robust fat-tire bike that’s comfortable, capable, and built to last, the M6 is a smart investment. It strikes a near-perfect balance between power, comfort, and real-world usability—at a price that makes sense for most families.
If you’re after cutting-edge tech, featherweight frames, or pro-level speeds, you might look elsewhere. But for most riders, the Spacewalk M6 is the practical, fun, and reliable e-bike that delivers—mile after mile.
| Preview | Product | Price | |
|---|---|---|---|
 | Spacewalk Small Electric Bike,16″X4″ Fat Tire Ebike,Compact Design,More Suitable for Riders Under… | $648.00 $598.00 | View on Amazon |
