SunRace MZ903 12-Speed Cassette Silver for Shimano

The SunRace MZ903 12-speed cassette is designed for mountain bikes with a Shimano drivetrain where a very wide range is needed. Its 11-51-tooth range covers steep climbs and fast sections.

• 11-51-tooth range: low gears for steep climbs and high gears for speed
• 12 sprockets with gradual steps: 11-13-15-17-19-21-24-28-33-39-45-51
• Weighs 497 g, with the 3 largest sprockets made from aluminium
• Fits 8, 9, 10 or 11-speed Shimano MTB freehub bodies with a 12-speed Shimano rear derailleur
• Metallic silver finish; available only in the 11-51 version

Technical specifications

• Model: SunRace CSMZ903
• Colour: Metallic silver
• Number of speeds: 12
• Tooth range: 11-51
• Sprockets (teeth): 11-13-15-17-19-21-24-28-33-39-45-51
• Sprocket materials: Steel and aluminium (7075): 3 largest sprockets in aluminium, 9 in steel
• Weight: 497 g
• Freehub body compatibility: 8, 9, 10 or 11-speed Shimano MTB freehub bodies, with 12-speed Shimano rear derailleurs