SHIMANO Polymer Coated Stainless Bicycle Cables A premium, ultra‑low‑friction derailleur cable engineered for the fastest, lightest shifting in Shimano’s top‑tier Dura‑Ace systems. Best for Riders seeking the smoothest possible mechanical shifting Road and MTB bikes using Shimano‑compatible mechanical derailleurs Not ideal for Electronic shifting systems (Di2, AXS, EPS) Riders who prefer standard stainless cables without polymer coating What this product does Reduces sliding resistance inside the housing, resulting in lighter lever feel, quicker shifts, and improved long‑term performance. Compatibility Shimano mechanical road and MTB derailleurs Works with standard 4 mm derailleur housing Benefits Polymer coating dramatically lowers friction for faster, smoother shifts Stainless steel core resists corrosion and maintains cable strength Consistent performance even under high tension “Fur‑like” polymer strands do not affect shifting function Technical specs Diameter: 1.2 mm Lengths available: 2500 mm and 2100 mm Material: Stainless steel with polymer coating Double‑ended cable for road/MTB compatibility Requires proper pre‑stretch to avoid initial slippage at fixing bolt