Linnpower ST Gear Drive Kit - All Steel
There may be color differences between batches, so please do not place an order if you mind.
Zephyr Base: 13T 8D motor gear, gear ratio: 2.7, stock gear
ratio: 2.6
Zephyr Pro: 11T 10D motor gear, gear ratio: 3.2, stock gear
ratio: 3.2
VIPER 216Wh: 13T 8D motor gear, gear ratio: 2.7, stock gear
ratio: 2.8
VIPER ER 432Wh: 13T 8D motor gear, gear ratio: 2.7, stock gear
ratio: 3.1
Shipping
UK, EU, AU: Free shipping |Incl. Tax;
USA: $15 shipping fee | Incl. Tax;
CA: $15 shipping fee | Incl. Tax.
Why choose Linnpower ST Gear Drive?
- Ultra-compact footprint — max diameter only 70mm, fits wheels down to 80mm.
- 3-gear design engineered for smooth torque transfer and durability.
- All-metal gears made from super-hard alloy steel for extreme strength and long life.
- Low-noise straight-cut gear geometry uniquely optimized by Linnpower for quiet operation.
Performance & Compatibility
- Switchable gear ratios: 1:2.7 and 1:3.2 for flexible speed vs torque tuning.
- Supports both 8d and 10d axles (8d supports 13T motor pinion; 10d supports 11T / 13T motor pinions).
- Compatible with common motor can sizes: 50 / 52 / 63.
- Precision CNC 6061-T651 aluminum housing with anodized finish — lightweight, stiff, and corrosion resistant.
Built for Reliability — Design Highlights
Linnpower MINI ST uses a purpose-built gear profile and machining tolerances to deliver industry-leading reliability. Even with a straight-cut (spur) gear layout — favored for load capacity and simplicity — our special tooth design keeps noise low while maximizing efficiency and strength. The housing is fully sealed with O-rings for improved weather and debris resistance, extending service intervals and keeping your drivetrain running clean.
Key Specifications
| Specification | Detail |
|---|---|
| Maximum housing diameter | 70 mm |
| Minimum compatible wheel | 80 mm |
| Gear train | 3-gear design, all-metal alloy steel |
| Gear ratios | 2.7 (switchable) / 3.2 (switchable) |
| Axle support | 8d (13T motor pinion) & 10d (11T / 13T motor pinion) |
| Motor compatibility | 50 / 52 / 63 sizes |
| Housing | 6061-T651 CNC machined, anodized |
| Sealing | Integrated O-ring seals for improved ingress protection |
| Noise | Low-noise straight-cut gears (Linnpower proprietary profile) |
Ideal For
- Linnpower Zephyr & Linnpower Viper & ACEDECK Breeze.
MINI ST Gear Drive Kit is designed and tested for reliability across daily-ride and high-load use cases.