ZSH3185A
Auto-Shift Internal Hub ZSH3185A
3-speed fully automatic internal gear hub. No motor. 1.4 kg, 1.85 overall ratio. Mid-drive e-bikes, folding and city bikes.
ZSH3185A
Auto-Shift Internal Hub ZSH3185A
3-speed fully automatic internal gear hub. No motor. 1.4 kg, 1.85 overall ratio. Mid-drive e-bikes, folding and city bikes.
Auto-shifting Internal Gear Hub8 Specs6 Highlights
Transmission Detail
A close-up motion layer reinforces precision and engineering character instead of showing specs alone.
Specifications
| O.L.D | 135mm |
| Weight | 1.4kg |
| Dimensions | φ98×180mm |
| Drive Type | Chain / Belt Drive |
| Step Ratios | 0.74 / 1 / 1.36 |
| Shifting Mode | Automatic |
| Number of Speeds | 3-speed |
| Total Gear Ratio | 1.85 |
Highlights
- 3-speed auto internal hub, 1.85 total ratio
- Three gears (0.74/1/1.36) cover full speed range
- No motor needed, pure drivetrain upgrade
- Cable-free design, maintenance-free clean look
- Ideal for mid-drive e-bikes and folding bikes
- Lightweight at 1.4kg
Products
Overview
ZSH3185A is the flagship 3-speed automatic internal gear hub. With a 1.85 overall ratio across 3 gears (0.74 / 1 / 1.36), it covers the full urban speed range without any motor or external gear cable — perfect for mid-drive e-bike upgrades and folding city bikes.
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