jiatongdiji Durable Mountain Bike Pedal Assist System: 12 magnets for precise sensing
Ever wish your e-bike could read your mind on a grueling climb? The Durable Mountain Bike Pedal Assist System is the tech that gets close. This sensor kit slips onto your ride, delivering buttery-smooth power boosts exactly when you need them. It’s all thanks to 12 precision magnets that track every pedal stroke, so the motor responds to your effort—not just a clunky throttle.
Built for trails and commutes, this PAS is a battery-saver’s dream. It only kicks in during pedal action, and a speed sensor keeps pace with your every move. Tough enough to laugh off off-road jolts and vibrations, it mounts simply on the crank and chainstay. The result? A ride that feels more like an extension of you—effortless, intuitive, and seriously fun.
- PAS system for electric assistance
- Speed sensor integration
- Durable construction for mountain biking
- Easy installation on ebikes
- 12 magnets for precise sensing
General specs
- Brand: jiatongdiji
- Seller: Joom
- Magnet Count: 12
- Compatibility: Ebikes, Mountain bikes
- Function: Pedal Assist System (PAS), Speed Sensing
- Installation: Crank and chainstay mount
- 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 | |||||
|---|---|---|---|---|---|---|
Durable Mountain Bike Pedal Assist System Black 12 magnets for precise sensing
|
Mountain Bike 12 Magnets Ebike Assistant Sensors Speed Sensor Pedal Assist PAS System
|
Power Pedal Assist Sensor Dual Hall integrated
|
3CZY KTD12R 12 magnets for enhanced sensitivity
|
High Sensitivity Waterproof E-Bike Pedal Assist Sensor Black High sensitivity for accurate pedal detection
|
Bicycle PAS Assistant Sensor Electric bike retrofit
|
|
| Brand | jiatongdiji | YajingGlass | Sport2ZY | 3CZY | Sturdy equipment | Mndhfjk2 |
| Model | KTD12R | |||||
| Color |
|
|
||||
| Rating |
|
|
|
|
|
|
| Price | $9.20 | $9.43 | $17.60 | $24.83 | $28.24 | $11.94 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 17, 2025 | August 23, 2025 | August 12, 2025 | August 25, 2025 | August 22, 2025 | August 18, 2025 |
| Compatibility | Ebikes, Mountain bikes | Mountain bikes, Ebikes with PAS | Electric Bikes | Electric bike conversion kits | Universal for e-bikes | Most traditional bicycles |
