e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 The stable viscosity provides a

The stable viscosity provides a long service life

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It is developed to offer ultimate protection in offroad conditions

e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 The stable viscosity provides aAt e*thirteen, we're always striving to bring something new to the table. That's why we created the Helix cassette line to offer unparalleled cross compatibility without sacrificing performance. As e bikes have become more popular, we set out to engineer a close ratio cassette specifically for them. Enter the Helix Race 13 52T a 12 speed close ratio cassette specifically engineered for steep terrain where climbing speeds are high and descents are