e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 5mm BB Spindle Interface DUB

5mm BB Spindle Interface DUB Chainring material Aluminum Bolt Circle Diameter (BCD) Direct Mount (DM) Power meter n/a Power Meter Type n/a Chainring Offset 3mm

this rear derailleur is available in both short and medium cage options

Battery: Li-Ion polymer battery (4000mAh)

Battery life 150 Hours

Abrasion resistant and made from long-lasting materials

e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 5mm BB Spindle Interface DUBAt 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