Does the rear disc brake rotor need to be shimmer apart from the sprocket?
Zeda Screaming Demon V2 Engine-Ready Motorized Bicycle - Built In Gas Tank - Gas Frame Bike
The optional rear disc brake doesn't include any instructions. Seems like it mounts along with the motor sprocket but without spacers it looks like the chain may be too close to the rotor.
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Open Oct 12, 2026 - 10:34 AM
1answer
Staff Answer
Sep 18, 2026 - 11:31 AM
Yes to install that rear disc brake rotor you would need to install/add spacers/shims to help make sure the sprocket is far enough away so that the 415 chain clears both the rotor body and brake caliper.
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