CosyHome P850C Bike Gear Shift Button Controller: 4 PIN connector
Available Options
Ever struggled with clunky gear shifts that throw off your ride's rhythm? The Bike Gear Shift Button Controller is here to change that—seamlessly syncing with your Bafang P850C Mid Mount motor display like they were made for each other (because, well, they were). Say goodbye to awkward pauses and hello to buttery-smooth transitions. And with its 4 PIN connector, it's not just a fling; this connection's built to last. Plus, setting it up? Easier than convincing yourself you 'need' another bike accessory.
Why you'll love it:
- Gear shifts so smooth, you'll forget you're doing them
- Built tougher than your resolve to avoid coffee before a ride
- Plays nice with specific Bafang models—no awkward compatibility issues here
- Compatible with Bafang P850C
- Mid Mount display panel
- Easy installation
- 4 PIN connector
General specs
- Brand: CosyHome
- Model: P850C
- Seller: Joom
- Connector Type: 4 PIN
- Compatibility: Bafang P850C Mid Mount motor display panel
- Installation: Easy
- First listed by seller: 6/21/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
CosyHome P850C 4 PIN connector
|
ZuiyouSports P850C 4 PIN connector
|
LWN P850c 4P 4-pin connector
|
CosyHome S866 Color display
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Electric Bike Controller 12V 500W power
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CosyHome 886 Thumb 36V/48V/60V compatibility
|
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| Brand | CosyHome | ZuiyouSports | LWN | CosyHome | CosyHome | CosyHome |
| Model | P850C | P850C | P850c 4P | S866 | 886 Thumb | |
| Color | ||||||
| Rating |
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| Price | $22.42 | $29.83 | $17.71 | $94.24 | $22.36 | $76.40 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 29, 2025 | August 20, 2025 | August 31, 2025 | August 29, 2025 | August 29, 2025 | August 29, 2025 |
| Connector Type | 4 PIN | 4 PIN | 4-pin | |||
| Compatibility | Bafang P850C Mid Mount motor display panel | Bafang P850C Mid Mount motor display panel | Bafang P850c central motor | DC motor | ||
Bike Gear Shift Button Controller
Benjamin Y.
Denver, CO
July 2, 2025
As a pragmatist I was skeptical at first but after using this for a couple of weeks I have to admit it has improved my biking experience too much the transitions between gears are buttery and it integrates well with my setup no issues with the connection so far and it was easy to install just plug it in and go I could be wrong but it seems built to last which is important for someone like me who uses their bike regularly for commuting and weekend rides with my kid overall a solid addition that makes shifting feel natural and hassle-free
- Pros: I can say for sure the gear shifts are incredibly smooth and it connects easily with my motor display making rides much more enjoyable without any awkward pauses the setup was straightforward and it feels durable enough to handle regular use
- Cons: It only works with specific motor models so if you have something else it might not be compatible which could be a downside for some riders