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The Torp TM50 Speed is a high-RPM air-cooled IPM PMSM inrunner mid-drive motor for the Sur-Ron Ultra Bee, built for top speed with a 97 RPM/V wind, up to 13,000 RPM, 55kW peak output and 89 N·m of torque from a very low 2 mΩ winding resistance. Pairs with Torp's TC-series controllers for aftermarket Ultra Bee builds.

In brief: 24000W mid-drive motor.

Specs verified Jul 25, 2026

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Specifications

Motor Design

Design
Inrunner PMSM
Stator Height
80mm
Pole Pairs
5
Cooling
Air

Performance

Wattage
24000W
Peak Wattage
55000W
KV Rating
97
Rated RPM
13000
Max Torque
89.00Nm

Electrical

Max Phase Amps
1200A

Features

PAS Sensor Type
None
Temp Sensor
PT1000
Has Encoder
Yes

Physical

Weight
14.2 kg
Dimensions (L×W×H)
198mm × 170mm × 170mm
IP Rating
IP67

Frequently Asked Questions

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