Crank Arm Left 170mm for Bafang Electric Bicycle

Bafang Mid-Drive Replacement Left Crank Arm (170mm)

Lost your grip? If your pedal has come loose or the threads are stripped, this 170mm Left-Side (Non-Drive) Crank Arm is the exact replacement you need. Designed specifically for the Bafang Mid-Drive motor system, this arm ensures your e-bike stays on the road with a factory-standard fit.

Key Features

• Bafang Optimized: Fully compatible with the BBS01, BBS02, and BBSHD mid-drive conversion kits.
• High-Strength Alloy: Forged from premium Aluminum Alloy to handle the high-torque demands of electric motors while remaining lightweight.
• Standard Geometry: Features a 170mm length, matching the original specifications of most e-bike setups for a balanced, ergonomic pedal stroke.
• Secure Interface: Built with a horizontal square taper spindle hole for a precise, "no-play" connection to your motor's axle.

Specifications

Feature	Details
Position	Left Side (Non-Drive Side)
Length	170mm
Interface	Square Taper (Horizontal)
Material	Durable Aluminum Alloy
Color	Classic Matte Black

Installation Tip

Unlike the right side, the Left Crank Arm features "reverse" threading for the pedal. To install your left pedal, you must turn it counter-clockwise (lefty-tighty). Always ensure the arm is tightened firmly against the motor spindle to prevent the square hole from rounding out during heavy use.

Note: This Left Crank is sold as a single unit.