Shimano CS-R7000 105 11-Speed Cassette delivers smooth, precise shifting for road cycling, optimising energy use and cadence control. Hyperglide EV sprockets deliver crisp, reliable shifts even under load, while lightweight alloy carriers and drilled sprockets reduce weight without losing strength. Nickel-plated finish resists corrosion for lasting performance. Buy your bike gears at Halfords, the UK's largest bike accessories retailer.