Siaecosys Motor 138 60H 2500W Mid Drive Motor, a premium power core engineered for electric vehicle DIY upgrades, urban commuting and off-road riding. 
Boasting an impressive peak power of 6300W and maximum torque of over 60N.m, this IPM PMSM mid drive motor is built with advanced flux weakening technology and strict quality control, delivering unbeatable power, efficiency and durability.
Core Performance & Key Advantages
Crafted with automated production processes for consistent high quality, the SiA138 60H motor outperforms traditional hub motors with its lightweight and compact design (net weight only 9.3kg). Its core advantages lie in the professional engineering and practical performance upgrades:
· Powerful Output: 2500W rated power (72V DC rated voltage) and 6300W peak power, paired with a maximum speed of 3000RPM@72V (up to 4500RPM with flux weakening), delivering strong acceleration and high-speed performance.
· Superior Efficiency: Max efficiency of >91%, with high energy efficiency during climbing and fast acceleration thanks to flux weakening technology, saving power and extending riding range.
· Reliable Durability: Class F insulation grade, air cooling system and KTY83-122/KTY84-150 thermic probe, supporting a maximum working temperature of 150°C without performance loss; IP67 waterproof and dustproof grade ensures stable operation in harsh outdoor environments.
· Precise Control: Equipped with Hall Sensor (60° hall angle) and 5 pole pairs, matching a controller current limit of <100A for smooth and precise speed control; 16mm² thick phase wires and SC16-6 copper terminals ensure safe and stable power transmission (tensile test >200N).
Perfect Matching & Easy Installation
Designed for universal compatibility, the Siaecosys motor 138 60H fits most e-bike and electric motorcycle frames, with clear installation instructions for easy DIY assembly—no professional skills required for basic installation.
We recommend matching with the VOTOL SV120 CAN BUS Controller (72V, rated current 80A, peak current 350A) for optimal performance: this sine wave programmable controller features 150% flux weakening, 10800W max power and IP67 waterproof rating, achieving perfect synergy with the motor to maximize power output and control precision.
Siaecosys Motor has always been dedicated to providing high-quality, cost-effective electric vehicle power solutions.
The SiA138 60H 2500W mid drive motor combines powerful performance, reliable quality and flexible purchasing options, bringing a premium upgrade experience for your electric bike or motorcycle.
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