DetailsXG1090 Power Dome:~ Lighter, stiffer, and quieter. Hollow machined steel cluster and outer machined alloy cog make this lighter and stiffer than a titanium cassette. Elastomers and special tooth profiling eliminates vibration and noise when the chain engages the cogs while maintaining lossless power transfer. 135g. 11-23T.
- • Hollow machined cluster
- • Stealth Ring noise damping bands
- • Lighter and stiffer than a Ti cassette