Description
Transform your ride with the TONGSHENG TSDZ8 Mid-Drive Electric Motor. Designed for effortless integration, the TSDZ8 fits seamlessly into standard JIS 68-73mm bottom bracket sizes. Its advanced torque-sensing technology delivers powerful and responsive assistance, providing exceptional climbing ability and a smooth, natural riding feel.
Tongsheng TSDZ8 Firmware Update
The latest 2025 firmware upgrade improves assist speeds in levels 1-5, resulting in a faster, smoother, and more efficient performance compared to TSDZ8 motors from other suppliers.
Highlights:
- Easy to install: Compatible with most standard bicycles BB length 2.78in/2.87in (68mm/73mm) outer diameter and 1.34in/1.42in (34mm/36mm) inner diameter. We include BB adapter rings and screw washers in the packaging for a secure fit, suitable for Road, Mountain, Folding, Hybrid, Commuter, and Cyclocross bikes.
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Powerful and Reliable: 22ah+ controller current, 140 N.m torque, paired with torque sensor, effortlessly controlling various terrain and challenging various riding conditions, for example, climbing, long-distance, leisure, and commuting rides, etc.
Real-time Riding: With the comprehensive dashboard at your fingertips, you can enjoy a motorbike-like experience, effortlessly monitoring vital information in real-time, including battery level, speed, mileage, drive level mode selection, and system error alerts. - Mid Drive Ebike Kit Solution: Compared to other e-bikes with similar specs from other brands, our mid-drive solution can save you 1000-2000USD. Plus, you can choose from various DIY schemes to pair the perfect battery capacity with your riding style, ensuring a tailored fit for your needs.
- Local Support: In addition to the 2-year warranty on the motor, we also provide technical support to ensure you're always riding smoothly. If you have any questions or concerns, please don't hesitate to reach out to us at any time.
Tongsheng TSDZ8 Display Setting Video
Tongsheng TSDZ8 Manual
Tongsheng TSDZ8 Motor Installation Video
Tongsheng TSDZ8 Specs
| Specification | Value | Description |
| Rated Voltage (DCV) | 48 V | DC |
| Rated Power | 750 W | Peak Power 1300W |
| Efficiency | ≥80% | - |
| Reduction Ratio | 38 | - |
| Wheel Size (Inch) | 20", 24", 26", 27.5", 28", 29", 700C Optional |
Compatible with various bicycle wheel sizes.
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| Max Torque | 140 N.m |
Delivers powerful climbing and acceleration.
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| Weight | 10.6 LBS (4.8 kg) | Only Motor |
| No-load Speed (n0) | 125 RPM | - |
| Power Assist Ratio | 36%–300% |
Offers multiple assist modes.
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| Pedal Sensor | Speed and Torque Integrated |
Provides a natural and smooth riding experience.
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| Shaft Standard | JIS |
Compatible with standard JIS bottom brackets.
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| Noise Grade | <55 dB | Quiet operation. |
| Throttle | Thumb Throttle | - |
| E-Brake | Brake Lever or Brake Sensor | Optional |
| IP Level / Salt Spray Test | 65/96 |
IP65 rating provides waterproof protection against daily rain and mud.
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What's in the Box ?
TSDZ8 Mid-Drive Kit Package Includes:
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1 × TSDZ8 Mid-Drive Motor
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1 × Ebike Display (Optional)
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1 × Thumb Throttle
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1 × 1T4 Motor Cable
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1 Pair × Brake Sensors or Brake Levers (Optional)
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1 Pair × Crank Arms
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1 × 42T Chainring with Cover
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1 × Dual-Port Speed Sensor with Magnet (Supports Headlight & Taillight)
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1 × Motor Mounting Wrench
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1 Set × Lock Nuts with 73mm BB Washer Adapters
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1 × User Manual
E-Bike Battery Package Includes:
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1 × Ebike Battery (Optional)
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1 × Battery Charger
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1 × User Manual
⚠️ Note: Different battery types include different mounting accessories. Please refer to the product images for exact contents.
Choose Your E-Brake Type
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Mechanical Brake Levers – Simple, budget-friendly, and compatible with most standard mechanical brake systems. Requires replacing your current brake levers during installation.
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Hydraulic Brake Sensors – Ideal for hydraulic disc brakes, preserving original brake feel while safely cutting motor power for smooth, responsive control. Installs by attaching the sensor to your existing hydraulic brake system without replacing the levers.
Mid Drive Ebike Kit Wiring Diagram Installation:
Choose Your Battery:
48V 13Ah Ebike Down tube Battery Dimensions and Specifications
48V 16Ah Ebike Down tube Battery Dimensions and Specifications
48V 20Ah Ebike Down tube Battery Dimensions and Specifications
Hailong Downtube Battery Installation Display
A streamlined and secure downtube battery installation, seamlessly integrated into the bike frame for a clean look.
48V 10AH EBIKE Triangle Battery Dimensions and Specifications
48V 20AH EBIKE Triangle Battery Dimensions and Specifications
Triangle Battery Installation Display
A secure and space-saving installation, with the battery pack fitting neatly inside the bike's main triangle for optimal weight distribution and a clean aesthetic.
Tongsheng TSDZ8 Mid Drive Ebike Kit Purchase Show
Shipping and Returns Overview
Free Shipping
U.S. Stock Available: Delivery in 3–7 business days.
If U.S. Stock Unavailable (International Shipping): Delivery in 20–45 business days.
30 Days Returns
Warranty Overview
All Powallon products include a 1-year warranty from the delivery date. We cover defects and performance issues with fast repair or replacement—USA-based support included.
Customer Reviews
Nice kit, packaged well. Only issue are instructions are lacking.
Easy to put on! Motor already has the fastest firmware. Customer service has been great to answer all my questions. Most importantly the motor works great!
The hardest part was unscrewing my bike: it needed so many specialized tools to remove the bottom bracket and the pedals.
But the installation of the kit was super easy! And the whole setup works amazing: it's powerful, quiet and very efficient.
My best recommendations!