This 10-speed cassette from SRAM is designed to be sturdy and smooth-shifting. The three large sprockets are made with titanium and supported on a spider, while the smaller sprockets are made with heat-treated steel. While the steel is not as light as titanium, they are durable nonetheless. The SRAM PG 1070 Cassette 2010 is also designed to be quieter than ever before. The SRAM PG 1070 Cassette 2010 is compatible with either SRAM or Shimano chains, and it comes in 11 to 23, 25, 26, 28T, and 12 to 25, 26, or 27T. The SRAM PG 1070 Cassette 2010 retails for $95.75, and you can purchase it at Wiggle.