Made from aluminum alloys and steel, providing strong construction with rust resistance and wear resistance Direct replacement part that fits into existing folding bike systems, helping to restore normal operation of your bike precision thread machining ensures a tight connection with the wheel and smooth, silky rotation Folding bike single speed flywheel delivers smooth turning action with low noise for a quiet ride Compatibility and use Designed for folding bike single speed flywheel assemblies Suitable as a direct replacement for worn or damaged components to maintain performance 23 practical use scenarios Replacing a worn or damaged flywheel on a folding bike to restore smooth pedaling during daily commuting Upgrading a folding bike to ensure reliable engagement and quiet operation for urban riding Stocking as a spare part in a bike rental or service operation to minimize downtime during maintenance