SKU: 67099591431

BBS02 - Bafang Mid Drive Kit - B Series

Sale price$404.55 Regular price$449.50
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Description

BBS02 - Bafang Mid Drive Kit - B SeriesFor general assistance, commuting, recreational riding, and outdoor leisure, the BBS02 has it all! It's the easiest conversion kit to ride and install, with over 10,000 units sold worldwide. The big sibling of the BBS01, the BBS02 mid drive kit comes in 750W and your choice of battery For when you need to climb Everest on a bike or travel a great speed on private property. Watch the BBS01 02 review by Electric Bike Report below. Full Specifications

 

For general assistance, commuting, recreational riding, and outdoor leisure, the  BBS02 has it all! It's the easiest conversion kit to ride and install, with over 10,000 units sold worldwide.

 

The big sibling of the BBS01, the BBS02 mid drive kit comes in 750W and your choice of battery - For when you need to climb Everest on a bike...or travel a great speed - on private property.

Watch the BBS01/02 review by Electric Bike Report below. 

Full Specifications

General

 Type Mid drive conversion kit
Intended Usage On road, commuting, recreation, and leisure
Nominal Power 500W to 750W
Cruise Speed
40km/h
Max Speed 45-50km/h (Depends on your gearing)
Max Range
Up to 75km / 45 miles (depending on battery selection)
Average Range 45-60km / 30-40 miles (depending on battery selection)
Throttle Type Thumb throttle
Pedal Assist Levels Up to 9
Handlebar Display C965 LCD display
Wiring Type EB-BUS waterproof cable set
Max Rider Weight 120kg

Battery

 Battery Chemistry LiMn204 Lithium Ion
Nominal Battery Voltage 48V
Fully Charged Voltage 54V
Battery Capacity Dependant on selection
Nominal Battery Energy Dependant on selection 
Battery Removable With locking mechanism 
Battery Cell Type 18650 Samsung
Cell Spec Dependant on selection
Cell Configuration 13S 
Cell Management Built-in BMS
Other Features 5V USB output for charging, controller/cradle included
Maximum Battery Charger Cycles 1000 full cycles
Battery Charger Type SANS 48V 2A Smart Charger
Battery Charge Time 3-6 hours from empty (depending on selection)

Motor

Motor Brand Bafang (8FUN)
Motor Model BBS02
Motor Voltage 48V
Max Motor Power 750W
Drive Type Bottom bracket mid drive motor with gear reduction
Motor Sensors Hall Sensor

Controller

 Controller Brand Bafang (8FUN) built in 
Controller Operating Voltage 48V
Controller Max Voltage 50V
Controller Low Voltage Cutoff 41V
Controller Peak Operating Amps 25A
Controller Nominal Power Output Up to 1,200W peak
Controller MOSFET Tubes 9
Controller Sensors Hall sensor

Weight

Total Weight - No Battery 5kg (11lbs)
Battery Weight 3.2kg (7.1lbs)
Total Weight 8.2kg (18.1lbs)

Dimensions

Battery Width 82mm (3.2")
Battery Length 360mm (14.1") including cradle, 315mm (12.4") without
Battery Height 125mm (4.9")

In The Box

- BBS02 Motor
- Battery
- Battery Cradle
- Battery Charger
- LCD Handlebar Display with control panel 
- Thumb Throttle 
- 46T Chainring
- Speed Sensor
- E-Brake Sensors
- 4 to 1 Wiring Harness
- Motor fixings 
- Plastic Wiring Loom/Sleeve


Motor Fitment

We recommend measuring the internal width of your bottom bracket and ensure you have between 68mm and 73mm to fit the BBS motor. For full fitment requirements see Will This Kit Fit My Bike?

Battery Fitment

The NT Battery case typically installs onto your drink bottle mounts along the top surface of your down tube. Its measurements are: 36cm long x 8.2cm wide x 12.5cm high. 

 

Will this battery fit your bike? Find out here.  

If your frame is too small, there are other options for battery installation including rear rack installation using rear rack such as this one here

Manual

 

All user manuals

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 67099591431

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4.7 ★★★★★
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Mack L.
Port Orchard, US
★★★★★ 5
Comfortable and easy to set up
Color: Black, Color: Black
I’m happy with this chair. It was not hard to assemble, and it feels stable after putting everything together. The mesh back is comfortable and breathable, so it doesn’t feel too hot when sitting for a while. The seat cushion is also thicker than I expected and feels soft enough for daily use. I like the adjustable headrest and the back support, especially for working at a desk. The chair looks simple and clean, and the wheels move smoothly. Good value for a home office chair.
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Reviewed in the United States on May 1, 2026
W
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Wen Cortes
Alexandria, US
★★★★★ 5
Exactly the Desk Chair I Was Looking For
Color: Black
had been needing a new desk chair for a while, and this one has been a great addition to my workspace. I use it every day while working, and it feels very comfortable, even when sitting for long periods of time. The seat provides good support, and the backrest helps me stay comfortable throughout the day. Assembly was straightforward, and the instructions were easy to follow. I also like how well it fits in my workspace and how nice it looks. So far, I am very happy with the comfort and overall quality. It has definitely made my workdays more enjoyable.
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Reviewed in the United States on June 8, 2026
T
Verified Purchase
Turkey
Cuba, US
★★★★★ 4
very ergonomic
Color: Deep Black, Color: Deep Black
I bought this as a replacement for one of those gaming chairs that kills your back with a little lumbar pillow and this one is muuuuch better. the back support is everything you’d need and got rid of my neck pain after long periods of sitting and the seat cushion is supportive but still comfortable. It’s the kind of chair that you don’t really think about much because it’s so natural to sit in that you forget it’s there. The armrests flipping is a really nice feature too. One star off only because the head rest is so far back that i can’t really rest my head on it and every part of the chair that’s cloth is made of the same mesh texture like the armrests and seat. but i have no other complaints this is a good chair
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Reviewed in the United States on March 14, 2026
E
Verified Purchase
Elva
Alexandria, US
★★★★★ 5
Comfortable Ergonomic Chair for Long Workdays
Color: Black, Color: Black
I’ve been using this chair for my home office, and it’s been a great addition to my workspace. The seat cushion is thick and comfortable, even after several hours of sitting, and the mesh back keeps good airflow throughout the day. I especially like the adjustable headrest, which provides extra neck support when leaning back during breaks. Assembly was straightforward, the chair feels sturdy, and the wheels roll smoothly on my floor. The all-black design also gives it a professional look that fits well in any office setup. Overall, it’s a comfortable and affordable ergonomic chair that offers excellent value for the price.
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Reviewed in the United States on May 28, 2026
E
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Emily Hopman
Pawtucket, US
★★★★★ 3
Sturdy but uncomfortable
Color: Black
The seat itself is sturdy and easy to put together, I’ve now had the product for 8 months and had no issues wear/tear despite nearly daily use, but… it’s not comfy, at all. The seat cushion has a texture to it that scrapes at my legs if I don’t have an extra pillow on it or am wearing shorts. Additionally, the seat pillow is just kind of hard. It doesn’t give very much at all, so if I sit on it for more than an hour or two at a time my butt starts to get really sore. It works as a budget option, but invest in a good seat pillow if you plan to sit in it for any length of time.
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Reviewed in the United States on April 29, 2026

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