e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 Rear derailleur equipped with ""Nano

Rear derailleur equipped with ""Nano Clutch

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

Blue is standard

these shifters deliver unprecedented reliability

Suitable for most chain sizes and styles

e*thirteen Helix Race 12-Speed 13-52T Cassette - Intergalactic Size:13-52 Rear derailleur equipped with ""NanoAt 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