e*thirteen Helix Race 12-Speed 13-52T Cassette - Black Size:13-52 Bottom Bracket Shell Width: 61mm*

Bottom Bracket Shell Width: 61mm* to 73mm

full carbon integrated bar/stem: 90x380mm

and not always practical to use

semi-aero barstem features optimised hand positioning and moulded cable entry ports

The silicone’s thickness is meticulously designed to keeping the earbuds compact while providing just the right cushioning at contact points

e*thirteen Helix Race 12-Speed 13-52T Cassette - Black Size:13-52 Bottom Bracket Shell Width: 61mm*At 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