Description
The 5DEV R-SPEC eBike Crankset is designed for modern light and trail electric mountain bikes. Made from 7075-T651 aerospace aluminum, it offers a strong, stiff, and lightweight construction. The crankset features an optimized cutout design that places material where needed and removes it where it isn’t, providing a responsive pedal feel that remains firm under motor assist torque without adding unnecessary weight.
This crankset measures 155mm in length with a Q factor of 192mm and is finished in black. It is compatible with Bosch, TQ, and the 2025 Specialized Levo Gen 4 eBike motors, using an ISIS spindle interface. The crank arms have low-profile shapes and smooth edges to improve ergonomics and reduce pedal strikes, with reduced material around the pedal boss to increase ground clearance.
Please note that the crankset does not include chainrings, bottom bracket, or spindle. It uses a steel crank bolt (8mm hex) and a billet aluminum self-extractor (16mm hex) for installation. The pedal spindle size is 9/16″.
- Precision-CNC’d from 7075-T651 aerospace aluminum for a stiff, strong, and lightweight eBike crankset.
- Compatible with Bosch, TQ, and 2025 Specialized Levo Gen 4 eBike motor systems via IS Spline Drive interface.
- 155mm crank length with a Q factor of 192mm, designed specifically for mountain e-bikes.
- Optimized cutout design enhances pedal responsiveness while minimizing weight and improving ground clearance.
- Ergonomic low-profile arms with smooth edges reduce pedal strikes during trail rides.





