The Shimano CS-RS400-11 cassette pushes the boundaries of entry-level road cycling with an exceptional gear range of 327%. Specifically designed for the Tiagra R4000 groupset, it offers an 11-36T ratio that transforms your approach to terrain: from explosive sprints on flat roads to the most demanding climbs, every situation finds its ideal gear. This cassette embodies Shimano's philosophy of accessible technical excellence, delivering performance worthy of higher-end groupsets in a format optimized for versatile cycling.

Technical architecture and HYPERGLIDE technology

• Exclusive HYPERGLIDE technology: Computer-calculated tooth profiles and strategically positioned shift ramps ensure optimal chain control during gear changes. Result: fast, crisp, and responsive indexed shifts even under maximum load.
• Progressive 11-13-15-17-19-21-23-25-28-32-36T ratio: Meticulously spaced sprocket sequence to guarantee smooth transitions. The small sprockets (11-25T) favor speed and precision in fast rolling, while the larger gears (28-32-36T) open the door to the steepest climbs without compromising cadence.
• Weight-optimized cutaway sprockets: Technical cutouts reduce rotating mass without sacrificing structural rigidity, promoting sharp accelerations and responsiveness when relaunching.
• High-resistance nickel-chrome finish: Durable anti-corrosion surface treatment that significantly extends service life and maintains consistent performance against weather and wear.

Compatibility and system integration

• Exclusive Tiagra R4000 11-speed compatibility: This cassette is specifically designed to work with Shimano Tiagra R4000 11-speed components. It uses standard road 11-speed sprocket spacing but absolutely requires a compatible RD-R4000 rear derailleur.
• HG 11-speed Road freehub body: Mounts on HG spline M splines, compatible with standard 10/9/8-speed hubs, MTB 11-speed and certain 7-speed cassettes (CS-HG400/HG210). Simple installation on most current road wheels.
• Compatible chains: Designed to work with LINKGLIDE and HG 11-speed chains (CN-HG601, CN-HG701, CN-HG901, CN-LG500 recommended by Shimano).
• Treated steel lockring: Ensures secure retention and long-term corrosion resistance.

Versatile performance and gear development geometry

With a ratio of 327%, this cassette offers remarkable range covering all terrains. The large 36-tooth sprocket significantly eases steep climbs, allowing you to maintain a healthy cadence even on double-digit gradients. At the opposite end, the 11-tooth sprocket enables high top speeds on descents or during bunch sprints. The intermediate spacing favors smooth pedaling on rolling roads, always guaranteeing a suitable gear without breaking rhythm.

Construction standards and durability

• Premium materials: High-quality steel sprockets for maximum mechanical resistance, steel/aluminum composite spider for optimized stiffness-to-weight ratio.
• Road-optimized design: Perfect integration into Shimano 2x11-speed double chainring systems, cadence/power balance adapted to road cycling demands.
• Proven reliability: Shimano engineering guaranteeing precise shifts and superior durability over long distances, intensive training and daily rides.