A new design that features different shapes for the inner and outer plates. This unique construction allows for a smoother shift between larger and smaller cogs, reducing the overall strain on the cassette and chain. Thanks to this, it's also lighter than traditional chains of similar strength. Features: - New shaped inner plate: Smoother rear shifting - New shaped outer plate: Improves chain release from outer ring to inner ring - Enhanced press-in pin construction: Durable and quiet - Redesigned inner and outer plates - Weight: 272g