LEWIS EP-D 155mm Aluminum E-Bike Crankset for DJI Motors

Check the motor before you look at anything else on the LEWIS EP-D crankset. A 10-tooth spline ties this crank to DJI electric assist motors and nothing else, so if your bike runs a different motor, this one is not for you however good the arm looks.

Confirm the motor spline first

The EP-D is equipped with a 10-tooth spline designed for DJI motors and is only compatible with DJI electric assist motors. Take a look at the output on your own bike and confirm the motor brand before you remove your old cranks, since a spline that does not match cannot be forced on.

Is a 155mm arm right for you?

Shorter arms generally give more pedal clearance over rocks and roots, which suits technical e-mountain riding, while some riders find that a change of length also changes their knee angle and saddle height. If you are moving down from a longer crank, expect to raise your saddle slightly and take a few rides to adapt.

What the hollow cut and reinforcement are doing

The arm has a hollowed structure that safeguards torsional load capacity, with targeted reinforcement and thickening on primary load-bearing zones. That approach aims to optimize weight without compromising strength on heavy-duty e-mountain bikes, where high pedal and motor loads meet at the crank.

• Series: EP-D
• Material: CNC-machined forged 7075 aluminum alloy
• Arm length: 155mm
• Interface: 10-tooth spline for DJI motors
• Before buying: confirm your chainring mount and chain line
• After fitting: recheck the crank bolts once you have ridden a short distance

Before you order, ask about chain compatibility and which DJI motor models this 155mm crank suits, then check them against your own drivetrain. Once it is on, listen for clicks under load, since these usually point to a fastener that needs another look.

Technology

7075 Aluminum Alloy

ALU Crankset Weight: 642g

Crank Length: 162.5mm

Bottom Bracket Specification: 70mm

DJI motor spline

Equipped with a 10-tooth spline designed for DJI motors; only compatible with DJI electric assist motors. Select based on your actual application.

Hollow Cut Lightweight Design

Weight is optimized whilst retaining sufficient strength. The cut-out design reinforces the crank’s resistance to torsional forces, delivering consistent superior torsional rigidity.

Reinforced & Thickened Design

EP-D Crank features targeted reinforcement and thickening on primary load-bearing zones for reliable load support. Thanks to these thickened regions, the cut-out design maintains adequate material stock and preserves outstanding pedal torsional rigidity.

Specifications