The Shimano Ultegra CS-6800 is a lightweight 11-speed HG-EV cassette with rigid alloy sprocket carrier for reduced weight and better shifting performance, even under the most demanding gear changes. The hyperglide EV sprockets have been designed to reduce weight with improved teeth shaping to provide accurate shifting and reduced wear. The wide gear range is designed to meet the demands of all
SRAM PG730 7sp MTB Cassette + Chain BundleBy choosing to group SRAM components together you gain the compatibility, reliability and crucially the effectiveness of the SRAM brand Below you can choose between an array of high quality cassettes and matching chains to complete your 7-Speed MTB bike.
campagnolo chorus 11 speed cassette and chain bundle cassettes freewheels on other UK sites