Best Mid-Drive Electric Bike Kits

I have put together a table of useful links featuring the most popular mid-drive electric bike conversion kits currently available.  The products listed below are from Bafang or Tongsheng – the current market leaders in plug-and-play mid-drive motors.  If your DIY e-bike build is on a tight budget there are also plenty of cheap electric bike kits available that utilise direct drive or geared hub motors.

bafang bbs02b 750w mid drive e bike conversion kit
✅Link to the Bafang BBS02B 750w (trusted vendor on Aliexpress)

For my UK and international visitors there is product table of links to suppliers that I personally use on Aliexpress for Bafang and Tongsheng mid-drive motor kits. I have been dealing with these suppliers for nearly three years and I have always received an excellent service.


My preferred battery supplier is UPP (UnitPackPower), I have found their customer service to be second to none and I have only had a couple of minor issues with their batteries out of well over a hundred purchased.

I have listed various options for the Bafang mid-drive and the Tongsheng TSDZ2 . These motor’s continue to be popular, with Bafang being the more established brand of the two.

For more information on these kits, check out my electric bike kit reviews section. If you are still undecided as to whether to go for a kit or purchase a ready-made e-bike please see my electric bike vs conversion kit post.

tongsheng tsdz2 e-bike conversion kit
✅Link to Tongsheng TSDZ2 (trusted supplier on Aliexpress)

Please read my reviews of the kits prior to making a purchase. Although these motors are generally reliable, they can sometimes be problematic, and installation is not always straightforward. The other thing to consider is ongoing maintenance, most mid-drive motors will require some servicing or replacement parts in the long-term. If you are buying one of these motors it would be good to familiarise yourself with the inner workings of the motor in question.

Thankfully both the Tongsheng and Bafang have a good availability of replacement parts, from controllers through to primary gears and speed sensors. I will be compiling a pricing chart for these as well.

bafang bbs02b 500w 48v e-bike conversion kit
✅Link to Bafang BBS02B 500w (trusted vendor)

Battery selection

Choosing the right battery for your build is important, as you will want one that has a suitable range for your particular needs. In my electric bike batteries explained article, I show how you can calculate the approximate range of a given battery. I have also compiled a comparison table for all kinds of electric bike batteries from 36v10ah all the way up to 52v17.5ah.

hailong electric bike battery
✅Link to UPP (trusted battery vendor on Aliexpress)

Spare Parts

Thankfully there is a good supply of electric bike parts available, so should you ever run into any problems, there is usually a solution.

Installation

I have provided a PDF installation guide for the Bafang, and there is a Tongsheng installation video below – note: In this video, the bottom bracket has been loosened prior to removal.

If you need any further advice on a purchase, please leave a comment below.

Buy the Bafang BBS01B 250w from trusted vendors✅

The Bafang BBS01B can be purchased from the links below with shipping to most regions including the EU, UK, US and Canada.
Buy from Aliexpress (mulitple shipping options
Buy from Amazon (various countries)
Buy from eBay
👉Compare Bafang BBS01B 250w prices (UK visitors only)

Buy the Tongsheng TSDZ2 from trusted vendors✅

The Tongsheng TSDZ2 is available from the links below with shipping to the EU, UK, US and Canada.
Buy from Aliexpress (various shipping options)
Buy from Amazon (multiple countries)
Buy from eBay
👉Compare Tongsheng TSDZ2 prices (UK visitors only)

Buy the Bafang BBS02B 750w from trusted vendors✅

The Bafang BBS02B is available from these websites with shipping to EU countries, UK, US and Canada.
AliExpress.com Product - Bafang 8FUN BBS02B 48V 750W 25A mid drive motor Bicycle Electric Bike EBIKE e-Bike Engine Conversion Kits newest version
Buy from Amazon (multiple countries)
Buy from eBay
👉Compare Bafang BBS02B 750w prices (UK visitors only)

Buy the Bafang BBSHD from trusted vendors✅

The Bafang BBSHD is available to buy from the links below with shipping to multiple regions including the EU, UK, US and Canada.
Buy from Aliexpress (various shipping options)
Buy from Amazon (mulitple countries)
Buy on eBay
👉Compare Bafang BBSHD prices (UK visitors only)

If you require any help or advice on making your purchase, please us the comments section below.