E*thirteen Helix Plus Cassette - 12-Speed 9-50t Color:Black 1 inch in height

1 inch in height

Sound Level: 51 dB(A)

13mm cartridges for the body

Brake piston press and bottle opener

CE tested and certified as impact protection: Elbow EN1621-1

E*thirteen Helix Plus Cassette - 12-Speed 9-50t Color:Black 1 inch in heightHelix 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,