QS Motor QS138-A 70H E-Moto Conversion Kit
Complete e-motorcycle/e-scooter mid-drive conversion kit built around the QS Motor QS138-A 3000W 70H PMSM inrunner motor. Includes a Fardriver NS72450 sine wave controller (48-72V, 200A DC / 450A phase peak), SIAECOSYS DKD LCD speedometer, Z6 combination throttle/switch, wiring harness, 72V-to-12V DC converter, ignition key switch, and turn signal flasher relay. Motor ships with a 428-pitch 14T sprocket adapter for chain drive.
Where to Find
Prices tracked across 2 sellersAliExpress - NB Ebike Factory Store
$679.00 + free shipping
eBay - eBay - NBPower (eBay)
$849.90
AliExpress - NB Ebike Factory Store
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Price History
Current best price $679.00. Over the past 90 days: low $679.00, high $849.90, average $714.60 — down 5% vs average.
- AliExpress - NB Ebike Factory Store
- AliExpress - NB Ebike Factory Store
- eBay - eBay - NBPower (eBay)
| Date | Price | Shipping | Total | Change | Coupon | Rating | Sales | In Stock | Status |
|---|---|---|---|---|---|---|---|---|---|
AliExpress - NB Ebike Factory Store(2 records) | |||||||||
| Jun 17, 202608:24 AM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| Jun 17, 202608:24 AM | $679.00 | $0.00 | $679.00 | Initial | — | — | — | Yes | active |
AliExpress - NB Ebike Factory Store(24 records) | |||||||||
| May 29, 202607:47 PM | $679.00 | $0.00 | $679.00 | $0.00 | SSUS93−$93.00 | — | — | No | active |
| May 28, 202605:22 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | No | active |
| May 27, 202606:36 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 27, 202606:36 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 23, 202606:27 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 23, 202606:27 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 22, 202604:24 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 22, 202604:23 PM | $679.00 | $0.00 | $679.00 | $0.00 | USSS05−$5.00 | — | — | Yes | active |
| May 21, 202604:28 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 21, 202604:27 PM | $679.00 | $0.00 | $679.00 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 19, 202604:31 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 19, 202604:30 PM | $679.00 | $0.00 | $679.00 | $0.00 | USSS35−$35.00 | — | — | Yes | active |
| May 18, 202604:27 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 18, 202604:26 PM | $679.00 | $0.00 | $679.00 | $0.00 | USSS12−$12.00 | — | — | Yes | active |
| May 17, 202602:32 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 17, 202602:31 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 16, 202602:27 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 16, 202602:27 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 15, 202601:35 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 15, 202601:35 PM | $679.00 | $0.00 | $679.00 | $0.00 | SRUS02−$2.00 | — | — | Yes | active |
| May 14, 202604:10 PM | $679.00 | $0.00 | $679.00 | $0.00 | SRUS04−$4.00 | — | — | No | active |
| May 12, 202612:02 PM | $679.00 | $0.00 | $679.00 | $0.00 | — | — | — | Yes | active |
| May 12, 202612:02 PM | $679.00 | $0.00 | $679.00 | $0.00 | SRUS50−$50.00 | — | — | Yes | active |
| May 12, 202602:43 AM | $679.00 | $0.00 | $679.00 | Initial | — | — | — | Yes | active |
eBay - eBay - NBPower (eBay)(1 record) | |||||||||
| Jun 8, 202606:04 AM | $849.90 | — | $849.90 | Initial | — | — | — | Yes | active |
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Included Components
QS Motor QSD138A-70
Mid-Drive Motor
Fardriver NS72450/NS84450/NS96450
Controller
SIAECOSYS DKD LCD
Display
SIAECOSYS Z6 Throttle & Switch Set
Throttle
SIAECOSYS Vehicle Mainline Wiring Harness
Wire Harness
SIAECOSYS DC-DC Converter 72V to 12V 10A
Accessory
Generic E-Motorcycle Ignition Key Switch
Power Switch
Generic 12V LED Flasher Relay
AccessoryFrequently Asked Questions
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