Install the bicycle flywheel on the rear wheel. As you pedal, energy is transmitted to the flywheel through the chain. The flywheel’s inertia stores this energy, and it helps rotate the rear wheel to drive the bike forward. Key benefits - Smooth ride and consistent power delivery thanks to energy storage in the flywheel - Essential rear wheel accessory that enhances ride quality and stability - Durable construction using steel with high wear resistance and high strength - 10 speed freewheel compatibility to support reliable shifting performance Specifications and features - Material: steel for high wear resistance, strength, and durability - Speed: 10 speed freewheel, designed for smooth operation with compatible shifting systems Use scenarios - City commuting: integrates with a 10-speed drivetrain to provide smoother acceleration and steadier power transfer in daily riding - Uphill and long rides: improves pedal stability and reduces effort fluctuations when climbing or sustaining long efforts - Replacement or upgrade: suitable for riders replacing worn components to restore reliable shifting and rear-wheel performance Notes - Designed as a rear-wheel accessory to improve ride smoothness and power delivery through the drivetrain - Compatible with 10-speed freewheel systems for seamless shifting and performance consistency