Helix Race Cassette 12s Al Cogs Ethirteen Galactic SIZE:31 Internal packing is designed for

Internal packing is designed for maximum longevity to extend intervals between maintenance

Helps prevent catastrophic front-wheel lock-ups caused by accidental lever contact

Manufactured from high-strength steel to resist deformation under high torque

Compounded for high mileageH rated (130 mph) tube type 4 ply nylon carcass

Helix Race Cassette 12s Al Cogs Ethirteen Galactic SIZE:31 Internal packing is designed forFeaturing a striking galactic finish, this 12 speed cassette combines high tech materials with precision engineering. It is designed to offer the ultimate gear range while maintaining a lightweight profile. Advanced machining techniques result in a highly durable yet light component. The broad gear spread allows for a more consistent cadence across varied terrain. Surface treatment increases resistance to environmental contaminants and corrosion.