The Shimano Alfine CT-S500 Chain Tensioner, designed for Alfine-equipped bicycles, is an essential component for maintaining optimal chain tension. This double pulley system accommodates a front chainring difference of up to 16 teeth and works seamlessly with sprockets sized between 18 to 20 teeth.

Engineered for precision and durability, the CT-S500 ensures smooth and reliable performance. It is perfect for cyclists looking to enhance the longevity and efficiency of their bike's drivetrain.

• Double pulley design for improved chain management
• Supports a wide range of chainring and sprocket sizes
• Robust construction for long-lasting use