New e*thirteen Helix Cassettes: One Size Doesn’t Fit All
Helix Race 13-52T + Helix Race 9-52T Experience the advantages of e*thirteen’s all-new Helix Race cassettes. HELIX RACE 13-52T As pedal assist bikes have become more popular, we set out to engineer a close-ratio cassette specifically for e-MTBs. Enter the Helix Race 13-52T—a new 12-speed close-ratio cassette specifically engineered for steep terrain with high climbing […]
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