Machined from a block of 7075 aluminum and then coated for longer life and smoother running, the SL cassette is LIGHT! Only 88 g. in an 11-21 10 sp. S style (Sampson, Shimano, Sram) and a few grams more as you get bigger! The SL cassette is very rigid thanks to a special machining process that keeps a very stiff inner structure as part of the cassette for better shifts. Typically you can expect 1,500 miles with reasonable care. The SL Cassette was selected by Bicycling recently as a top component innovation, and has been featured by Velo News and Triathlete magazine for giving you a race day edge with a modest price! Available in 10 sp Road for Campagnolo, Samspon, Shimano and Sram, Campagnolo 11, and Shimano/Sram MTB in 9/10! At just $179, the SL cassette is a fast way to win! FOR A CHART OF CASSETTE COG SIZING PLEASE CLICK HERE |