8 Speed Chain on 9 Speed Cassette: All You Need to Know
VG SPORTS Ultralight 8 9 10 11 Speed Cassette 8v 9v 10v 11v MTB Mountain Bike cassetta separata ruota libera + Set di attrezzi per catena per bicicletta - AliExpress
VG 9 10 11 Cassetta Mountain Bike Ultraleggera Ruota Libera MTB Catena Bicicletta | eBay
Sram PG-1070 Cassette with PC-1091R 10 Speed Chain Kit – The Bikesmiths