E*Thirteen Helix Plus Cassette – 12 Speed – Black / 9-50 / Sram XD Drive / 12 Speed

Engineered for E-bike durability and cross experience compatibility with SRAM™ and Shimano™ drivetrains. This 9-50T combination is the hot set up for your 12 Speed MTB and allows for a 2 tooth smaller front chainring, shorter chain length, more clearance and range with our exclusive 9 tooth smallest cog.   Features 2-piece design allows for replaceable aluminium cogs. E*spec uprated for E-bike use. Reduces un-sprung rear wheel weight for improved suspension function and handling. Excellent shifting with Shimano™ and SRAM™ systems without compromise. e*thirteen’s wider range and 9 tooth cog allows riders to run a 2 tooth smaller chainring for more clearance and reduced weights....

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