SRAM XX1 Eagle XG-1299 Cassette - 12 Speed 10-50t Gold/BLK For XD Driver Body CheckoutSpec= MTB Seven-layer lightweight TPU design and

Seven-layer lightweight TPU design and construction provides low rolling resistance

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SRAM XX1 Eagle XG-1299 Cassette - 12 Speed 10-50t Gold/BLK For XD Driver Body CheckoutSpec= MTB Seven-layer lightweight TPU design andSRAM XX1 Eagle XG 1299 Cassette 12 Speed 10 50t Gold Black For XD Driver Body. The SRAM XG 1299 Eagle Cassette provides massive range and Eagle compatibility. It features SRAMs X Dome architecture for ultimate strength and weight savings. Fits the same XD drivers that are used for SRAM 10 42 11 speed cassettes Largest cog is aluminum Tooth profiles provide better up and down shifting and improve chain retention Titanium Nitride surface treatment