e*thirteen Helix Race 12-Speed 13-52T Cassette - Black Nutrition Power meter fully integrated into

Power meter fully integrated into the chainring for lighter weight

gravel bike or mountain bike: The easy-to-mount saddle bag offers extra storage space and thanks to the innovative quick-fix system with BOA® Fit System

The modern racer’s position has shifted

With this high-end XTR line available in both race and trail “Rider-Tuned” product families

e*thirteen Helix Race 12-Speed 13-52T Cassette - Black Nutrition Power meter fully integrated intoAt 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