ZSM3185A
3 Gear Auto-shifting Motor ZSM3185A
250W 3-speed auto-shift mid-drive, 1.85 overall ratio. 40%+ range improvement for hilly urban commutes.
ZSM3185A
3 Gear Auto-shifting Motor ZSM3185A
250W 3-speed auto-shift mid-drive, 1.85 overall ratio. 40%+ range improvement for hilly urban commutes.
3 Gear Auto-shifting Motor 12 Specs6 Highlights
Transmission Detail
A close-up motion layer reinforces precision and engineering character instead of showing specs alone.
Specifications
| O.L.D | 142mm |
| Weight | 3.6kg |
| Wire Exit | Left or Right Axle End |
| Brake Type | Disc Brake |
| Dimensions | φ141×203mm |
| Drive Type | Chain / Belt / Shaft |
| Step Ratios | 0.74 / 1 / 1.36 |
| Shifting Mode | Automatic |
| Max Motor Torque | 40Nm |
| Number of Speeds | 3-speed |
| Total Gear Ratio | 1.85 |
| Rated Motor Power | 250W |
Highlights
- 3-speed auto-shift, 1.85 total ratio
- 250W meets European regulations
- Strong hill-climbing for varied terrain
- 40%+ range gain over single-speed
- Chain, belt and shaft drive compatible
- Quiet internal gearbox, clean look
Products
Overview
ZSM3185A is the entry model in the 3185 3-speed series, rated at 250W. With a 1.85 overall ratio across 3 gears (0.74 / 1 / 1.36), it delivers significantly better hill performance and 40%+ range improvement over single-speed alternatives — ideal for varied urban terrain.
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