BAFANG M315 MM G340.750.C Mid Drive Conversion Kit: Can It Transform Your Regular Bike?

A powerful and affordable way to convert your regular bike into an electric one, perfect for DIY enthusiasts who want customization and strong hill-climbing ability, though you'll need to buy a battery separately and handle installation yourself.

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Best For

How this e-bike scores for different riding styles

High Performance
85/100

With 500W-1000W power options and the ability to customize speed settings for both pedal assist and throttle modes, this kit delivers strong performance for enthusiasts seeking power and customization.

Off-Road Adventure
80/100

The mid-drive motor design with up to 1000W power option and hill-climbing capability makes it excellent for trail riding, though final performance depends on the bike frame chosen for conversion.

Cargo & Utility
78/100

Mid-drive motors excel at hauling heavy loads with better weight distribution and torque, making this kit suitable for cargo applications when installed on an appropriate frame.

Daily Commuting
75/100

As a conversion kit with 750W motor and pedal assist, it offers good power for commuting, but requires DIY installation and separate battery purchase which adds complexity for daily riders.

Recreational Leisure
70/100

Three riding modes and throttle control provide flexible leisure riding options, though the installation requirement and lack of comfort features like suspension limit casual appeal.

Compact & Portable
20/100

This is a conversion kit for existing bikes with no folding capability, making it unsuitable for users seeking portability or compact storage solutions.

Our Verdict

This BAFANG mid-drive kit is a smart choice if you already own a good bike and want to turn it electric without spending thousands on a brand new e-bike. You can pick from three power levels - 500W for easy rides, 750W for most situations, or 1000W if you need serious climbing power. The kit comes with almost everything you need including a screen to see your speed, lights for riding at night, and a throttle so you can ride without pedaling. At $406, it costs way less than a complete electric bike. The mid-drive design is really clever because it puts the motor right where you pedal, which makes the bike feel balanced and climb hills much better than motors in the wheels.

This kit works best for people who like working on bikes and want to customize their ride. If you enjoy weekend projects and already have a nice mountain bike or commuter bike, this lets you make it electric your own way. It's great for riding to work, exploring trails, or hauling groceries because mid-drive motors are strong and efficient. You can adjust how fast it goes and how much help the motor gives you, so it grows with your needs. The one-year warranty and lifetime tech support mean BAFANG will help if something goes wrong.

The biggest catch is you need to buy a battery separately, which can cost $300 to $600 more depending on how far you want to ride. You also need to install it yourself, which takes a few hours even if you watch YouTube videos. If you just want to buy something and ride it the same day, a complete electric bike makes more sense. The 30-day return period is short, so you need to test it quickly. People who aren't comfortable with tools or don't want a DIY project should look at ready-to-ride electric bikes instead. But if you like the idea of building your own e-bike and saving money, this BAFANG kit gives you a lot of power and quality for the price.

What We Like

  • Super flexible with three power choices - pick 500W, 750W, or 1000W depending on how much oomph you want
  • Way cheaper than buying a whole new electric bike at just $406, and you get to keep your favorite bike
  • Fits almost any regular bike with standard bottom brackets between 68-125mm wide
  • Comes with everything you need in the box - brake levers, display screen, throttle, lights, and even the tool to install it
  • Mid-drive motor puts power right at the pedals so it climbs hills really well and feels more natural than hub motors

What Could Be Better

  • You have to buy the battery separately which adds a lot more cost on top of the $406 price tag
  • Installation takes some work and bike knowledge - not as simple as riding a ready-made electric bike out of the box
  • No walk mode feature to help you push the bike up stairs or through tight spaces
  • Not UL certified which some buyers want for safety peace of mind
  • Only 30-day return window is pretty short compared to many electric bike companies that offer longer trial periods

Standout Features

750W-1000W mid-drive motor
Higher power than most conversion kits which typically offer 250-500W, providing exceptional hill climbing and cargo hauling capability
Universal bottom bracket compatibility (68-125mm)
Fits more bike types than most conversion kits which are often limited to standard 68-73mm brackets
Complete accessory package with LCD display and lights
More comprehensive than typical conversion kits that require separate purchase of display, throttle, and lighting components

Features

Included Features

Integrated Lights
LCD Display
Pedal Assist
Throttle

Not Included

App Connectivity
Cruise Control
Fat Tires
Fenders
Foldable
Rear Rack
Removable Battery
Suspension
UL Certified
USB Charging
Walk Mode

Frequently Asked Questions

Common questions about BAFANG Mid Drive Kit:500W/750W/1000W Ebike Motor Kits, BBS02B HD Mid Drive Ebike Conversion Kit with LCD Display& Battery

Does this kit come with a battery?

No, the battery is sold separately. You need to buy a compatible battery based on how far you want to ride - bigger batteries let you go farther but cost more.

How hard is it to install this on my bike?

You need basic bike tools and some mechanical knowledge. BAFANG says it's relatively easy and there are lots of YouTube videos to help, but plan to spend a few hours on the installation.

Will this kit fit my bike?

It fits most regular bikes with bottom brackets between 68mm and 125mm wide. Measure your bike's bottom bracket before buying to make sure it will work.

What's the difference between the 500W, 750W, and 1000W versions?

More watts means more power. 500W is good for flat areas, 750W handles most hills and situations, and 1000W gives you the strongest climbing and acceleration power.

What warranty comes with this kit?

You get 30 days to return it, one year for repairs or replacement if something breaks, and lifetime tech support to help you with questions.

Scores

Overall Score 68/100
Value Score 88/100
Popularity 72/100

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Tags

conversion kit mid drive motor diy installation high power options budget friendly customizable battery not included hill climbing capable universal compatibility

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