Token’s high-performance silent pulley wheels are designed for cyclists who demand smooth shifting and durability.   Made from POM engineering plastic, they offer low friction and excellent wear resistance. The stainless steel bearings ensure smooth operation and long-lasting performance, while the injection overmolding process enhances structural integrity. Additionally, the special tooth profile reduces chain impact noise, providing a quieter riding experience. Whether for racing or long-distance rides, Token pulley wheels are the ideal upgrade for your drivetrain.   POM Engineering Plastic – Low Friction & High Durability Constructed from POM (Polyoxymethylene) engineering plastic, these pulley wheels provide low friction and high wear resistance, minimizing energy loss between the chain and pulleys for a smoother, more efficient ride.   Stainless Steel Bearings – Precision & Weather Resistance Equipped with stainless steel bearings, offering superior corrosion resistance and oxidation protection, ensuring consistent performance in various weather conditions.   Injection Overmolding – Enhanced Structure & Longevity Manufactured using injection overmolding technology, ensuring a stronger bond between the plastic body and bearings. This enhances overall durability and maintains precise bearing alignment for long-term reliability.   Special Tooth Profile – Quieter Riding Experience Token’s exclusive tooth profile design effectively reduces chain impact noise, lowering drivetrain sound levels and delivering a smoother, quieter ride.   Specification Bearings: Stainless Premium. Pulley Wheel: Upper 11T, lower 11T. Derailleur Brands: Shimano 12 Speed. RD Compatibility: Dura-Ace R9250/R9270. Weight: 20 g / set. Pulley Material: Plastic. Product Code: TK1711PS2.