E*thirteen Helix Plus Cassette - 12-Speed 9-50t 602042027 6 15" Late 2013 is

6 15" Late 2013 is a fusion of elegance and efficiency

high-end look without the high-end price for a range hood

Pulley 28x20 Sliding Roller Weights are designed to provide smoother acceleration and enhance variator performance

The vacuum RF function expels fatty acids

E*thirteen Helix Plus Cassette - 12-Speed 9-50t 602042027 6 15" Late 2013 isHelix Plus 12 Speed 9 50T cassettes are a drivetrain upgrade on a budget for analog and e bikes alike. Engineered to deliver Helix shifting precision, and cross compatibility with all SRAM and Shimano 12 speed drivetrains, the Helix Plus is also e*spec rated to withstand the rigors of e MTB. e*thirteen's exclusive 9 tooth highest gear cog, provides a 556% gear range, and lets you step down one chainring size, while keeping the same top end gearing,