e*thirteen Helix Race 12-Speed 13-52T Cassette - Grey Size:13-52 adopting key features such as

adopting key features such as tactile feedback that provides control without having to change your grip when shifting - a feature that has been perfected over several generations of mechanical shifter development

where the position out the front of the steerer is ideal for forward visibility

to ensure uniform roundness

all C-Bear Bottom Brackets are CNC-machined from high-grade aluminium for a precision fit in your frame

and easy to carry and store

e*thirteen Helix Race 12-Speed 13-52T Cassette - Grey Size:13-52 adopting key features such asAt 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