Install a bicycle flywheel on the rear wheel as part of an 11-speed freewheel system. When the cyclist pedals, energy is transferred to the flywheel via the chain. The inertia of the flywheel stores this energy, helping to rotate the rear wheel and drive the bike forward. Key benefits - Smoother ride: The flywheel’s inertia stabilizes pedal input and reduces pedal-stop feeling, delivering steadier propulsion. - Energy transfer and propulsion: Pedaling energy is stored in the flywheel and released to keep the bike moving between and during shifts. - Durable construction: Made of steel for high wear resistance, with high strength and long-lasting performance. - Seamless shifting: 11-speed freewheel design supports smooth operation with 11-speed shifting systems. Specifications and attributes - Material: steel - Speed compatibility: 11-speed freewheel - Function: energy storage via flywheel to drive the rear wheel - Performance: designed for smooth, reliable shifting systems and durable operation Compatibility and use - Compatible with 11-speed shifting systems that use a rear flywheel/freewheel arrangement - Intended to be installed on the rear wheel as part of an 11-speed drivetrain Use scenarios - Daily urban commuting on mixed terrain where smooth power delivery reduces fatigue - Hill climbing or long ascent routes where consistent back-ted energy helps maintain speed - Long-distance rides or touring sessions requiring stable, reliable pedal cadence and smooth acceleration Notes - This flywheel is a rear-wheel accessory and is designed to work with 11-speed freewheel configurations to achieve smooth shifting and reliable performance.