- Precision fit and wide compatibility - High-accuracy machined profile ensures consistent engagement with bicycle drivetrains and dependable operation. Designed for reliable fit and smooth driving across compatible systems. - Hardened steel construction for durability - Made from high-quality steel with surface hardening treatment to resist wear and extend service life. Built to withstand repeated use without premature degradation. - Reliable performance under stress - Resistant to high temperatures, corrosion, and rust. Maintains shape without deformation, delivering long-term dimensional stability and good impact resistance for everyday use and demanding conditions. - Lightweight hollow design - Hollowed construction reduces mass and drivetrain load while preserving structural strength. Achieves a practical balance between reduced weight and mechanical durability, making it a suitable choice for riders looking to decrease overall bicycle weight. Key attributes - Function: flywheel for bicycle drivetrain operation - Material: high-quality hardened steel - Performance: heat resistant, corrosion- and rust-resistant, impact resistant, non-deforming, long service life - Design: precision-shaped profile with hollow sections to lower weight and load Typical applications - Commuter and city bikes: dependable replacement or upgrade part to restore smooth drivetrain operation and reduce wear. - Performance and lightweight builds: lowers rotating mass to improve pedaling efficiency while retaining strength. - Maintenance and repair: durable, long-life component for routine service or refurbishment of bicycle drivetrains. How this helps you - Reduces maintenance frequency and part replacement thanks to hardened steel and corrosion resistance. - Lowers drivetrain load and rotating weight through hollow design, improving ride feel and efficiency. - Provides a precise, compatible fit to restore or improve drivetrain reliability without compromising strength.