Kogel Speed Kolossos for Shimano 12-Speed (Dura-Ace, Ultegra & 105) is the fastest oversized derailleur cage ever. Launch Edition, includes free CERAKOTE coating. This derailleur cage has been treated with a CERAKOTE coating. This ceramic treatment makes the cage extremely durable against damage. The new Kogel Speed Kolossos for Shimano 12-speed Dura-Ace, Ultegra, and 105 is designed for the ultimate balance of aerodynamics, efficiency, and durability. Engineered for riders who refuse to compromise, this oversized derailleur cage system is the fastest Kolossos ever, finely tuned to save watts and maximize drivetrain performance. With an ultra-slim, speed-focused design, the Speed Kolossos is built with aerodynamic optimization that reduces drag while maintaining the sharp, precise shifting Shimano is known for. Its custom cage and oversized ceramic pulleys reduce friction to an absolute minimum, ensuring that every watt you use translates directly to the road. If you're looking for a performance advantage that saves energy where it matters most, then the Speed Kolossos for Shimano 12-speed is your new secret weapon. Faster, smoother, and more efficient, because marginal gains win races. Free CERAKOTE coating Suitable for Shimano 12-speed Dura-Ace, Ultegra & 105 Ceramic bearings