Shimano acera hg200 9 speed mtb cassetteaffordable 9 speed hyperglide cassette sprocket features speed 9 speed ring configuration 11 13 15 17 19 21 24 28 32t11 13 15 17 20 23 26 30 34t chain compatibility super narrow hg for 9 speeda 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products buyshimano componentsfrom chain reaction cycles the worlds largest online bike store