TongSheng TSDZ2B 48V 500W/750W Torque Sensing Mid Drive Motor

The TongSheng mid drive motor is our new addition to the range. This new motor allows for an easy way to convert your bike to an ebike. This motor can do up to 45kmph! This 500W or 750W motor is packed with features. Compared to... Read more


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We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Returns Policy

You may return most new, unopened items within 28 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply call, email, or use the live chat. We'll notify you via e-mail of your refund once we've received and processed the returned item.

The Cycle to Work Scheme is a Government-backed initiative to encourage people to cycle to their place of work, and consequently reduce environmental pollution. It's also a way for you to save money on the cost of your cycle and spread the cost over a number of months, through your pay packet.

How do I get a conversion kit through Cycle to Work?

The paperwork required differs for each scheme and should be available from your employer or from the links below for each scheme:


Bike2Work Scheme

Green Commute Initiative - Our recommendation!

Cycle Solutions

Due to the cost of running the Cycle To Work Schemes we have to add a 10% fee on top of the kit price to maintain profitability, otherwise we cannot afford to be apart of the scheme. Sorry for the inconvenience.

Let's help fit your kit

Electric bike conversion kits are still quite new to the UK and inevitably you'll have questions about how to fit your kit. The good news is that you can contact us to ask us, either by calling us, using the live chat or sending us an email via the website.

We'll always offer straightforward and clear advice and, because we have fitted conversion kits hundreds of different bikes, we know exactly what we're talking about.

It's all very well selling conversion kits but unless you've fitted one from the ground up then you don't necessarily know what makes a quality kit fit - our experience in building electric bikes gives us a unique insight and therefore we can offer to fit your kit for you!

Give us a call on 01483 323 276

The TongSheng mid drive motor is our new addition to the range. This new motor allows for an easy way to convert your bike to an ebike. This motor can do up to 45kmph! This 500W or 750W motor is packed with features. Compared to Bafang motors this is also a Torque sensing motor. A torque sensor measures how hard the rider is pedaling to determine how much electric power to push to the bike. The TongSheng Mid Motor gives you more power when you need it most. This innovative motor responds in real time to your pedaling.

The TongSheng TSDZ2B  is the newest model that comes with a two clutch design on the main gear. Main gear disengages from the chain during riding which makes it to ride your bicycle like a mechanical one. The older version (The TSDZ2) only had one clutch design.

Whether you're cruising around town or climbing a steep hill, this motor gives you the boost you need to get where you're going. And because it's a mid-motor design, it's perfect for those who want a more balanced ride. So if you're looking for an electric bike conversion kit that can keep up with your active lifestyle, the TongSheng Mid Motor is the perfect choice.

Key information:

  • 48V 500W or 750W mid drive motor with torque sensor
  • No thumb throttle – this provides assistance when you pedal
  • Suitable for most bikes
  • LCD Display
  • 42T chainwheel
  • Replacement cranks (both sides!)
  • All required cables
  • Fits 67 – 73mm BSA bottom bracket. Contact us if you need help identifying

How do I know if this mid drive motor fits my bike?

This mid drive motor is designed to fit bikes with a 68mm (2.68inch) or 73mm (2.87inch) wide bottom bracket. The inner diameter of the bracket should be not less than 33.5mm.  Most modern bikes sold in the UK meet this standard (but please check).

We also provide a set of spacers to help you adjust the motor to fit your bike.


Pick from three different battery options; 12.5A5, 15Ah and a monster battery of 17.5Ah. See the dimension chart below to find out if the battery will fit your bike. The battery cells are either Samsung or LG cells and come with a 35Ah fuse to protect the battery. Paired with a high quality BSM and a USB port for charging your phone on the go.



The TongSheng TSDZ2B motor kit comes with a 1 year warranty based on purchase date. Please return to us for repair or replacement.


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TongSheng TSDZ2B 48V 500W/750W Torque Sensing Mid Drive Motor