Shimano SLC CS-M7100 Cassette 12-Speed, 10-45T or 10-51T
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Description
When Shimano's 12-speed cassette hit trade show floors last year, it made quite the noise. While the brand is famous for its pristine engineering and meticulous approach to components, we'd be lying if we said that its designers don't take their sweet time when new ideas hit the table. It may have taken a few years to see them jump into the twelve-speed game, but at the end of the day, we appreciate the time taken, as the end result offers precision that's been tested and well thought out — and we're as pleased as ever to see the trickle-down technology seep through the lineup to the new SLX CS-M7100 12-Speed Cassette. The SLX 12-speed cassette features the same smooth-shifting technology as its pricier brethren, but with more economical materials that let Shimano to drop the price, making it all the more palatable when you're getting ready to upgrade your rig or build up your dream bike.
Features:
- Wide range and close step 12-speed drivetrain
- Hyperglide+ Technology (10-45T)
- Compatible with Microspline freehub (10-51T)
- Range options: 10-45T, 10-51T
- Shimano Part Number: CS-M7100
HYPERGLIDE+ SHIFTING: Experience dramatically faster and smoother shifting, both up and down the cassette. Hyperguide+ technology uses redesigned ramps and tooth profiles to guide the chain precisely, eliminating the pedal shock and hesitation common with other drivetrains. This allows you to maintain momentum and cadence on any terrain.
BEAM SPIDER CONSTRUCTION: To reduce weight and increase stiffness, Shimano mounts the largest cogs on a lightweight aluminium spider. This rigid design allows for more direct power transfer, translating your pedalling effort into faster acceleration and crisp shifting.
MICRO SPLINE FREEHUB SYSTEM: This cassette is designed exclusively for Shimano's MICRO SPLINE freehub body. This standard is necessary to accommodate the 10-tooth cog, which provides a wider gear range for both steep climbs and high-speed descents. The finer spline pattern also prevents the cassette from digging into the freehub body under load, increasing durability.
Specifications:
| COG SIZES | 10-42T (10, 12, 14, 16, 18, 21, 24, 28, 32, 36, 40, 45) 10-51T (10, 12, 14, 16, 18, 21, 24, 28, 33, 39, 45, 51) |
| COG MATERIAL | Outer Cog: Aluminum 11 Inner Cog Steel |
| WEIGHT | 10-45T: 1 lb. 2.1 oz. 10-51T: 1 lb. 2.8oz. |
| WARRANTY | 2 years |



