TongSheng TSDZ8 750W Mid-Drive Ebike Conversion Kit - Can It Transform Your Old Bike?
A powerful and affordable way to turn your regular bike into an e-bike with excellent hill-climbing ability, but requires installation skills and you must buy the battery separately.
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Key Specifications
Best For
How this e-bike scores for different riding styles
Exceptional 140 N.m torque and 750W mid-drive motor excel at hill climbing and challenging terrain. The mid-drive system provides superior weight distribution for trail riding, though the lack of suspension information limits the score.
The 750W motor with 140 N.m torque delivers strong performance for enthusiasts, and the mid-drive system provides efficient power delivery. Maximum speed is not specified, which limits the full performance assessment.
The 750W mid-drive motor provides reliable power for urban commuting, and the pedal assist system offers efficient battery usage. However, the lack of integrated lights and fenders reduces commuter convenience, and it's a conversion kit rather than a complete bike.
The pedal assist system and LCD display make for enjoyable casual rides with good range potential. The absence of throttle mode and cruise control reduces convenience for purely leisurely riding.
The powerful 140 N.m torque and mid-drive motor placement handle heavy loads well and provide excellent climbing ability with cargo. However, no rear rack is included and maximum rider weight capacity is not specified.
This is a conversion kit for existing bicycles and does not fold. The motor unit weighs only 4.8kg (10.6 lbs) which is relatively light, but portability depends entirely on the base bicycle chosen.
Our Verdict
The TongSheng TSDZ8 is a conversion kit that turns your regular bike into a powerful electric bike for $730. The biggest selling point is the incredibly strong 140 N.m torque from the 750W mid-drive motor. This means the motor sits in the middle of your bike near the pedals instead of in the wheel. That makes it really good at climbing steep hills and handling rough trails. You get an LCD screen that shows your speed, battery level, and distance traveled. The kit works with most normal bikes and comes with adapter rings to make it fit properly. TongSheng gives you a 2-year warranty and technical support.
This conversion kit is perfect for people who already have a good bike they love and want to make it electric without spending $2000-3000 on a brand new e-bike. It's great for daily rides to work, weekend trail adventures, and long distance trips. The mid-drive motor is better than hub motors for hills and feels more natural when you ride. If you like working on bikes and don't mind doing some installation yourself, this is an awesome deal. The strong torque means you can carry groceries or ride up steep streets without struggling.
However, this kit has some important downsides to consider. You have to buy the battery separately, which adds cost and means shopping for compatible parts. There's no throttle, so you must always pedal to make it go. You don't get lights, fenders, or a rack included - those are extra purchases. Installing the motor takes mechanical know-how and special tools for removing your bike's bottom bracket. If you've never worked on bikes before, you might need to pay a bike shop to install it. Also, it's not UL certified like some other e-bike products. If you want a complete ready-to-ride bike with all accessories included, or if you prefer throttle control for tired days, you should look at complete e-bikes instead of this conversion kit.
What We Like
- Super strong 140 N.m torque makes climbing hills easy and handles tough terrain really well
- At $730, you save $1000-2000 compared to buying a complete mid-drive e-bike with similar power
- Works with most regular bikes that have 68mm or 73mm bottom brackets, so you can upgrade your current ride
- The LCD screen shows you everything you need like battery level, speed, and how far you've gone
- Comes with a 2-year warranty on the motor plus technical support if you need help
What Could Be Better
- You need to buy the battery separately, which adds to the total cost and shopping hassle
- No throttle mode means you always have to pedal - you can't just twist and go like a scooter
- Missing safety features like built-in lights, so you'll need to buy and install those yourself
- Installing the kit yourself takes some mechanical skill and tools - it's not plug-and-play simple
- Not UL certified, which some buyers prefer for safety and insurance purposes
Standout Features
Full Specifications
Weight & Capacity
| Bike Weight | 4.8kg |
Features
Included Features
Not Included
Frequently Asked Questions
Common questions about TSDZ8 750W Mid-Drive Ebike Conversion Kit with Optional Battery - Upgrade Your Ride with Powerful Electric Bike Kit (68mm/73mm BB Length, Universal Fit)
Will this fit my bike?
It fits most regular bikes with a bottom bracket that's 68mm or 73mm wide and 34mm or 36mm diameter. This includes road bikes, mountain bikes, folding bikes, and commuter bikes. The kit comes with adapter rings to help it fit properly.
Does the battery come with it?
No, the battery is sold separately. You can choose what size battery you want based on how far you need to ride. The motor runs on 48V batteries.
How hard is it to install?
You need to remove your bike's bottom bracket and pedals, which requires special tools and some bike repair knowledge. If you're not comfortable working on bikes, a bike shop can install it for you.
Can I use a throttle without pedaling?
No, this kit only has pedal assist. That means you have to pedal and the motor helps you. There's no throttle option to ride without pedaling.
What does the screen show me?
The LCD display shows your battery level, current speed, total distance traveled, which power level you're using, and error messages if something goes wrong with the system.
Best For
How this e-bike scores for different riding styles
Exceptional 140 N.m torque and 750W mid-drive motor excel at hill climbing and challenging terrain. The mid-drive system provides superior weight distribution for trail riding, though the lack of suspension information limits the score.
The 750W motor with 140 N.m torque delivers strong performance for enthusiasts, and the mid-drive system provides efficient power delivery. Maximum speed is not specified, which limits the full performance assessment.
The 750W mid-drive motor provides reliable power for urban commuting, and the pedal assist system offers efficient battery usage. However, the lack of integrated lights and fenders reduces commuter convenience, and it's a conversion kit rather than a complete bike.
The pedal assist system and LCD display make for enjoyable casual rides with good range potential. The absence of throttle mode and cruise control reduces convenience for purely leisurely riding.
The powerful 140 N.m torque and mid-drive motor placement handle heavy loads well and provide excellent climbing ability with cargo. However, no rear rack is included and maximum rider weight capacity is not specified.
This is a conversion kit for existing bicycles and does not fold. The motor unit weighs only 4.8kg (10.6 lbs) which is relatively light, but portability depends entirely on the base bicycle chosen.
Scores
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