Bosch E-Bike Chain Ring - 15T

No, this product includes the 15T sprocket only; the lockring is typically reused or purchased separately.

This model is specified for Performance Line and Active Line systems. Please verify your specific motor model offset requirements before purchase.

Replace the sprocket whenever you notice the teeth becoming pointed or when you install a new chain to ensure they wear together correctly.

It is highly recommended to follow Bosch's official service manual and use a torque wrench to ensure the lockring is tightened to the specified manufacturer torque.

The 0 mm offset ensures the chain line remains perfectly straight relative to the motor output, reducing friction and preventing premature chain wear.

Inspect the sprocket teeth for 'shark-fin' wear and check if the chain is stretched; replace both if the teeth are visibly worn.

Ensure you are using a dedicated crank puller tool compatible with your specific crank arm type to prevent stripping the threads.

Ensure the Bosch eBike locking ring tool is seated fully and check if you are turning in the correct direction, as some lockrings have reverse threading.