Or as low as 
SRAM 12-speed Eagle Cassette XG-1299 10-50T
Take a quick look at the new X-DOME™ Eagle™ cassette. The last dangling shred of an argument in favor of a mountain bike front derailleur is now officially dead.
Designed for use with our proven, reliable XD™ driver body, this 12-speed, 10- to 50-tooth cassette offers an optimal 500-percent gear range at a considerably lighter weight than 2x systems. It carries with it the X-DOME™ architecture, which, independent tests have concluded, yields the strongest cassettes on the market. New shifting characteristics improve both, inboard and outboard shifting, as well as chain retention.
Product features
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- SRAM’s cassette manufacturing technology provides the greatest durability and lightest weight
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- All-new shifting features create a smoother, quieter system with enhanced inboard and outboard shift performance
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- XD™ driver body compatible
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- Technology Highlight(s): X-DOME™, XD™ driver body, X-GLIDE™ 2
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- Material: Same as XX1, machined cromoly 11t cog cluster with aluminum 50t cog
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- Gear Ratios: 10-50t
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- Speeds: 12
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- Colors: Gold
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- Recommended Chain: Eagle™ chain
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- Recommended Group: XX1 Eagle™
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- Cogs: 10-50t: 10t, 12t, 14t, 16t, 18t, 21t, 24t, 28t, 32t, 36t, 42t, 50t
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- Compatibility: 12-speed XD™ driver body compatible
Color
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- Gold
