E*thirteen Helix Race 12s Cassette - 13 Hydration Pack Easy switch operation - Lens

Easy switch operation - Lens acts as power / mode button

5 inch x 30mm | 32 Hole | Black

1 Offset 14mm Offset Q-Factor 200

in a robust saddle bag which is built to last

New hardened double deadbolt design with anti-rotation resist against twist

E*thirteen Helix Race 12s Cassette - 13 Hydration Pack Easy switch operation - LensHelix Race Cassette 12 Speed 13 52T Bronze Helix R 12s 13 52T Cassettes are a new close ratio gearing design, engineered specifically to optimize cadence and shift performance under load in steep terrain with frequent climbs and gravity powered descents. While the close ratio concept was conceived as a game changer for e bikes and built exceptionally strong, it's equally at home on mountain bikes and weighs in at an impressive 467g. Offering