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- Hollow steel dome makes for the stiffest gear cluster ever at the lightest weight
- Compatible with SRAM RED eTap, RED, Force, Apex
- 11-30t and 11-32t ratios are NOT compatible with SRAM RED eTap
- Heat-treated, high-grade tool steel provides superlative durability and a beautiful finish.
- StealthRing™ elastomers and advanced tooth profiles eliminate vibration and noise for a smooth, silent ride.
- Aluminum cog: lighter, stiffer, stronger due to the design, material and production process.