Shimano XTR CS-M9101 12-Speed Cassette | 10-45T | MICRO SPLINE | HYPERGLIDE+
Shimano XTR CS-M9101 12-Speed Cassette | 10-45T
Race-proven speed, lightweight performance, and lightning-fast shifting.
The Shimano XTR CS-M9101 cassette is built for elite cross-country racers and performance-minded trail riders who demand quick acceleration, close gear spacing, and flawless shifting. Featuring Shimano's revolutionary HYPERGLIDE+ technology, the CS-M9101 delivers remarkably smooth gear changes—even while pedaling under full load.
The 10-45T gear range provides a more compact cassette than Shimano's 10-51T option, making it an excellent choice for racers and riders who prioritize tighter gear steps, faster cadence changes, and lower overall drivetrain weight. The result is a drivetrain that feels quicker, more responsive, and perfectly suited for fast XC courses, marathon racing, and aggressive trail riding.
To maximize performance while minimizing weight, Shimano strategically combines steel, titanium, and aluminum sprockets, producing a cassette that's exceptionally durable while keeping rotating mass to a minimum.
The CS-M9101 is fully compatible with MICRO SPLINE freehub bodies and Shimano 12-speed mountain bike drivetrains.
Key Features
- Genuine Shimano XTR 12-speed cassette
- Compact 10-45T gear range
- HYPERGLIDE+ shifting technology
- Fast, precise shifting under heavy pedaling loads
- MICRO SPLINE freehub compatibility
- Steel, titanium, and aluminum sprocket construction
- Lightweight race-ready design
- Ideal for XC, marathon, and performance trail riding
Gear Range
- 10T
- 12T
- 14T
- 16T
- 18T
- 21T
- 24T
- 28T
- 32T
- 36T
- 40T
- 45T
Technical Specifications
- Brand: Shimano
- Series: XTR
- Model: CS-M9101-12
- Generation: M9101
- Speeds: 12-Speed
- Gear Range: 10-45T
- Compatible Chain: Shimano CN-M9100
- Freehub Compatibility: MICRO SPLINE
- Shifting Technology: HYPERGLIDE+
- Construction: Steel, Titanium & Aluminum
- Finish: Anodized
- Shimano Product Code: ICSM9101045
- UPC: 192790893334
Why You'll Love It
- Closer gear spacing for smoother cadence transitions
- Excellent acceleration and race-ready gearing
- Industry-leading HYPERGLIDE+ shifting performance
- Premium lightweight construction with exceptional durability
- Perfect for competitive XC and marathon riders
Compatibility
- Shimano 12-speed mountain bike drivetrains
- MICRO SPLINE freehub bodies only
- Designed for Shimano XTR, XT, and SLX 12-speed systems
- Compatible with Shimano CN-M9100 and other Shimano 12-speed chains
Before You Buy
- This cassette requires a MICRO SPLINE freehub body.
- This listing is for the 10-45T cassette.
- Designed for Shimano 12-speed mountain bike drivetrains.
- Compatible with the Shimano CN-M9100 chain for optimal shifting performance.
The Shimano XTR CS-M9101 10-45T Cassette is the perfect choice for riders seeking fast acceleration, tighter gear spacing, and uncompromising race performance. Whether you're lining up for an XC race or chasing PRs on your favorite trail, this cassette delivers the speed and precision expected from Shimano's flagship XTR drivetrain.