The RAPTOR CS-M1250 is a high-performance 12-speed mountain bike cassette known for its striking aesthetics and broad compatibility. It is an ideal upgrade for riders who want a 12-speed drivetrain without needing to change their existing “standard” (HG) wheel hub.
## Technical Specifications
| Attribute | Specification |
| Model | CS-M1250 |
| Speed | 12-Speed |
| Gear Range | 11-50T (11-13-15-17-19-21-24-28-32-36-42-50) |
| Freehub Compatibility | HG (HyperGlide) — Standard Shimano/SRAM 8-11sp hubs |
| Weight | ~615g – 630g |
| Finish | Black-Rainbow (Oil Slick / Aurora) |
| Structure | Aluminum Spider (Black) with High-Tensile Steel Cogs |
### Key Features
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HG Hub Compatibility: Unlike Shimano Microspline or SRAM XD cassettes, the CS-M1250 fits on a standard HG freehub body. This makes it the “go-to” choice for 12-speed conversions on older or mid-range wheelsets.
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Spider Design: The black aluminum spider reduces weight and, more importantly, prevents the individual steel cogs from digging into your aluminum freehub body under high torque.
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Rainbow (Oil Slick) Finish: The largest cogs feature a multi-color “Rainbow” coating that is highly wear-resistant and provides a custom, high-end look to the drivetrain.
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Shifting Performance: Engineered with specialized ramp profiles to ensure smooth shifting even under load, compatible with SRAM Eagle (NX, GX, X01) and Shimano 12-speed (Deore, SLX, XT) derailleurs.
### Compatibility Checklist
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Chain: Works best with 12-speed chains from SRAM, Shimano, KMC, or YBN.
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Derailleur: Requires a 12-speed rear derailleur with a “Long Cage” (SGS) capacity to reach the 50T cog.
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Hub: Will not fit on Microspline or XD drivers. Ensure your hub is the standard “splined” HG type.
Visual Tip: The “Black-Rainbow” edition is particularly popular for builds using the Magene EXAR Ultra Dark wheels or other stealth-black components to add a subtle pop of color to the rear triangle.

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