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(to install the gearbox on the Breeze, please make sure to purchase the Zephyr rear bash guard as well).
MINI ST Gear Drive Kit is designed and tested for reliability across daily-ride and high-load use cases.