ZuiyouSports1 S866 E-Bike Conversion Kit Controller: 15A controller for 250W motor
Available Options
For around $200, this e-bike conversion kit turns any old bike into an electric ride—no need to shell out for a whole new machine. It packs a 15A controller, an S866 display, a brake lever, and a twist throttle, all working in sync to deliver smooth, responsive power from a 250W motor. Perfect for zipping through city streets or weekend joyrides, it’s the upgrade that makes sense for both your wallet and the planet.
In practice, installation is a breeze for anyone who’s ever tinkered with a bike, fitting most frames without a hitch. The S866 display keeps you in the loop with crisp readouts on speed and battery life, while the brake lever cuts motor power instantly for safer stops. It’s a clever way to breathe new life into your two-wheeler, blending efficiency with a dash of modern tech flair.
- S866 display panel
- Brake lever and throttle grip
- Easy installation and setup
- Compatible with most e-bike motors
- 15A controller for 250W motor
General specs
- Brand: ZuiyouSports1
- Model: S866
- Seller: Joom
- Controller Amperage: 15A
- Motor Compatibility: 250W
- Display Type: S866 panel
- Included Components: Brake lever, Throttle grip
- First listed by seller: 8/24/25
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 | |||||
|---|---|---|---|---|---|---|
ZuiyouSports1 S866 15A controller for 250W motor
|
ZY-Sport-N S866 22A waterproof controller
|
ZY-Sport-N S866 Waterproof metal casing
|
ZY-Sport-N S810 25A motor controller
|
3CZY S866 22A motor controller
|
ZuiyouSports1 S900 22A general controller
|
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| Brand | ZuiyouSports1 | ZY-Sport-N | ZY-Sport-N | ZY-Sport-N | 3CZY | ZuiyouSports1 |
| Model | S866 | S866 | S866 | S810 | S866 | S900 |
| Color | ||||||
| Rating |
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| Price | $102.28 | $158.05 | $88.90 | $134.88 | $108.19 | $153.54 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 22, 2025 | August 12, 2025 | August 12, 2025 | August 12, 2025 | August 13, 2025 | August 27, 2025 |
| Controller Amperage | 15A | 22A | 25A | 22A | ||
| Motor Compatibility | 250W | 500W | 750W | |||
| Display Type | S866 panel | LCD | Waterproof | |||
E-Bike Conversion Kit Controller
Sofia G.
Los Angeles, CA
September 2, 2025
I bought this as a gift for my husband, thinking it'd be a fun way to upgrade his old bike without breaking the bank, and honestly, it delivered on that. The first impression was great—everything worked together smoothly, and he's been enjoying it for weekend rides with the kids. It's not the fanciest thing out there, but for what it costs, it does the job well and adds a modern touch to an old favorite. I'd recommend it if you're looking for a budget-friendly way to get into electric biking, though it might not satisfy if you're after top-tier performance.
- Pros: Honestly, turning my old bike into something that zips around without buying a whole new one was extremely clever and saved me a ton of money. The power delivery felt smooth and responsive, making city rides way more fun, and the display showed speed and battery life clearly, which was super handy. Installation was a breeze for someone like me who's messed with bikes before, fitting my frame without any issues, and the brake lever cutting power instantly made stops feel safer.
- Cons: As it seemed to me, the whole setup could be a bit finicky at times, and honestly, for the price, I expected a bit more oomph or maybe some extra features to make it feel less basic. It's not perfect for every situation, especially if you're used to higher-end stuff, and I found myself wishing it had a bit more polish in how everything integrates.