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BAFANG 104 BCD Chain Ring Spider 8fun BBS01 BBS02 e Bike Mid Crank Drive Motor 104mm Chain Ring Adapter

4.5 4.5 out of 5 stars 37 ratings
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BAFANG

BAFANG 104 BCD Chain Ring Spider 8fun BBS01 BBS02 e Bike Mid Crank Drive Motor 104mm Chain Ring Adapter

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
37 global ratings
Works perfectly, barely throws the chain off.
5 Stars
Works perfectly, barely throws the chain off.
Works perfect for my mid drive with a 36 tooth sprocket.
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Top reviews from the United States

Vladimir
5.0 out of 5 stars Great for extra front gearing if you have enough space
Reviewed in the United States on February 8, 2020
Verified PurchaseEarly Reviewer Rewards(What's this?)
Works great but it adds extra offset to your bottom bracket. If you have a single speed you may run into some issues with your chain.

(I'm not sure about this bit, but I don't remember working as a standalone adapter to the bbs02)
2 people found this helpful
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Amazon Customer
5.0 out of 5 stars works great!
Reviewed in the United States on July 22, 2020
Verified Purchase
It allowed me to take off an old 32 tooth sprocket from old bike and put on my Bafang. Works great!
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Cataldo
4.0 out of 5 stars Good for smaller custom BBS02 chainrings
Reviewed in the United States on January 12, 2020
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Allows smaller diameter chainring to be installed by on Bafang BBS02 750 watt motor. Can install narrow-wide chain rings 34, 36 tooth (which I have tested). Moves chainline out away from bike such that on a ten speed cassette only the higher gears can be used (11, 13, 16, 20, 24 - or whatever the 5 or 6 higher sprockets are) ... The standard Bafang front chainring moves the chainline 9mm or so in towards the bike so that some of the lower gears can still be used. (28, 30) ... For hills the Bafang 44 tooth standard chainring is still a bit too big. So sacrifice some top speed on level ground to be able to go up hills spinning at 15 mph.
5 people found this helpful
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Bryan N.
5.0 out of 5 stars Need a smaller chainring? This is the attachment you need.
Reviewed in the United States on August 27, 2020
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Works perfectly with my bbs02 unit. Bought this to attach a smaller chainring for more torque.
3 people found this helpful
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Corey b.
5.0 out of 5 stars Works perfectly, barely throws the chain off.
Reviewed in the United States on October 9, 2020
Verified Purchase
Works perfect for my mid drive with a 36 tooth sprocket.
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Corey b.
5.0 out of 5 stars Works perfectly, barely throws the chain off.
Reviewed in the United States on October 9, 2020
Works perfect for my mid drive with a 36 tooth sprocket.
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Amazon Customer
5.0 out of 5 stars Problem solved
Reviewed in the United States on August 23, 2020
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Exact fit and solved my compatibility issue I was having
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Jonathan B Fernandez
4.0 out of 5 stars Nice product for for your DIY ebike
Reviewed in the United States on August 11, 2020
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You can change the chainring color of your mid drive motor, but throws off your chain line on lower gears.
One person found this helpful
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Gary M.
5.0 out of 5 stars Fits perfectly
Reviewed in the United States on May 30, 2021
Verified Purchase
Needed to change chain ring for bafang mid motor
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Top reviews from other countries

Tim Duggan
5.0 out of 5 stars Works well with 104 bolt spacing chain ring.
Reviewed in Canada on July 7, 2021
Verified Purchase
Added a 32t chainring to a BBS02 with this adapter. Needed minor file work on the adapter but it works great. The 32T is the smallest chainring i would use with this product.
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Simon Rompre
5.0 out of 5 stars Excellent
Reviewed in Canada on February 2, 2020
Verified Purchase
Works great!
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Rick D Grassie
4.0 out of 5 stars Very good service
Reviewed in Canada on November 3, 2020
Verified Purchase
Showed up in time and looks to be a good quality
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David H.
3.0 out of 5 stars Don't read this review
Reviewed in Canada on February 16, 2021
Verified Purchase
It works but alters the gear offset greatly from the Bafang OEM gear which can negatively affect the chain alignment making some gears unusable.
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