Key Features & Specifications:

Perfect Fit & Compatibility: Specifically designed to be compatible with popular mid-drive motors including BAFANG BBSHD, BBS02, BBS01, and TONGSHENG TSDZ8, TSDZ2B. Ensure optimal performance by choosing the correct side – this is the LEFT crank arm.
Precise 170mm Length: The 170mm arm length offers an excellent balance of pedaling efficiency and comfort, suitable for a wide range of riders and riding styles.
Diamond Taper Interface: Features a universal diamond taper design (JIS standard) for a secure, tight fit onto the motor's spindle, preventing loosening and ensuring efficient power transmission with every pedal stroke.
35mm Chainline Offset: The 35mm offset (also known as crank arm Q-factor) provides enhanced clearance between the crank arm and your bike's chainstay. This intelligent design prevents annoying rubbing or scraping, especially important on e-bikes with wider frames or larger tires.

Superior Quality & Durability:

Constructed from high-strength forged aluminum alloy, this crank arm is built to withstand the increased torque demands of mid-drive e-bikes. It offers an exceptional strength-to-weight ratio, providing long-lasting durability without adding unnecessary weight. The hard-anodized black finish resists scratches and corrosion, maintaining a sleek look ride after ride.

Your Reliable Riding Partner:

Whether you're commuting through the city, tackling steep hills, or enjoying a long-distance adventure, this replacement crank arm delivers the reliability and performance you expect. It's the smart choice for maintaining the peak performance of your BAFANG or TONGSHENG powered e-bike.