The PowerGlide 1170 cassette provides an undeniable performance advantage. It&';s the final piece in the drivetrain puzzle and delivers ultra-fast, ultra-quiet shifts that will always put you in the right gear. FEATURES - Cassette design for high shifting performance with a quieter chain/cassette combination. Semi-spidered design: light, strong, efficient 16t cog (except for WiFLi: 14t) SPECIFICATIONS - SPEED (CS) 11s - GEARING 11-25t, 11-26t, 11-28t, 11-32t, 11-36t - COG FINISH (CASSETTE) Silver - TECHNOLOGY (CASSETTE) PG - COG SIZES 11-28t:11,12,13,14,15,16,17,19,22,25,28, 11-32t:11,12,13,14,15,17,19,22,25,28,32, 11-36t:11,12,13,15,17,19,22,25,28,32,36, n/a WEIGHT BASED ON 11-25 tooth