Shimano 105 R7100 Cassette 12s - 11x34

Shimano 105 R7100 12-Speed Cassette - 11-34T (CS-R7100)

A true wide-range 12-speed cassette at the 105 price point. The 11-34T configuration delivers an easy bail-out gear for steep climbs while keeping a tight 11T cog for speed on flats and descents. Hyperglide+ shifting feels crisp and reliable, even under hard efforts, bringing near-Ultegralevel refinement at a much more accessible cost.

Ideal for anyone building or upgrading to the latest 105 mechanical or Di2 groupset who needs more forgiving gearing for hilly roads, sportives, gran fondos, or general training.

Key Highlights

• Generous 11-34T range with smooth, progressive steps – no big gaps
• Hyperglide+ technology for quick, precise shifts under load
• Refined tooth profiling for quieter operation and longer wear life
• Robust nickel-plated steel cogs with lightweight aluminum spider on the largest sprockets
• Full compatibility with all Shimano 12-speed road drivetrains (requires HG L2 12-speed road freehub)

Technical Specs

• Model: CS-R7100 (also listed as CS-R7101 in some regions)
• Speeds: 12
• Gear Range: 11-34T
• Cog Sizes: 11-12-13-14-15-17-19-21-24-27-30-34
• Weight: 361 g (manufacturer average)
• Freehub Body: Shimano HG L2 (dedicated 12-speed road – also fits standard 11-speed road HG freehubs)
• Material: Nickel-plated steel sprockets + aluminum spider
• Chain Compatibility: Shimano HG 12-speed (e.g. CN-M7100)