The Shimano Alivio CS-HG51 8-Speed ​​11-32 cassette is a suitable choice for hybrid and mountain bikes with eight gears. This cassette is part of the Alivio group and offers smooth shifting thanks to Hyperglide technology. Made of nickel-plated steel, this cassette comes with a lockring. Weighing 281 grams (for the 11-30 version), it's a durable and reliable choice for cyclists. Product specifications - Article number: ECSHG518132 - EAN: 4524667675730 - Brand: Shimano - Model: HG51 - Number of sprockets: 8 - Compatible body: Shimano - Gear ratio: 11-32 - Color: Silver - Brand: Shimano - Shimano group: Alivio - Shimano group code: HG51 - Shimano model code: CSHG51 - Model year: 2010 - Number of gears: 8 speed - Material: Steel - Weight: 281 grams (for the 11-30 version) - Type: Hyperglide