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| Management number | 236213472 | Release Date | 2026/07/09 | List Price | $112.00 | Model Number | 236213472 | ||
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Praxis EC-4 eCranks – Narrow Fit for Road/Gravel eBikes
The EC-4 crankset is designed for road and gravel eBikes with a narrow Q-factor, compatible with motors using a steel ISIS spline. Its carbon construction provides lightweight performance, stiffness, and durability for urban, gravel, and road e-bike applications.
Compatible Motors
Brose Mag
Fazua R50
TQ-HPR50
Giant E+ System BBSS (Hub Motor)
Not Compatible With
E-Mountain Bikes
Specialized Levo, Kenevo, Vomo, or Vado
Specifications
Set: Left & Right Cranks
Material: Carbon eCranks with crank boots/protectors included
Main Bolt: Alloy M24 crank bolt with self-extractor
Installation: 8mm Allen wrench | 50Nm torque
Weight: 380g (with crank boots)
Q-Factors:
178mm on Brose Mag motor
163mm on Fazua R50 motor
163mm on TQ-HPR50 motor
Important Notes
Designed for narrow-fit road/gravel eBikes only
Crank boots/protectors included for protection and longevity
The EC-4 eCranks deliver lightweight, precise, and durable performance tailored to narrow-spindle road and gravel e-bike drivetrains.
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form