The Helix Race cassette from E*thirteen is a highly advanced 12-speed cassette specifically designed for mountain biking. With an impressive range of 9 to 50 teeth, it offers a wide gear ratio that allows for easy handling of both steep climbs and fast descents. Weighing only 375 grams, it is a lightweight yet robust choice for demanding riders. The combination of aluminum and steel cogs ensures optimal performance and durability, while the precise construction guarantees smooth shifting performance. This cassette is ideal for anyone looking to elevate their mountain biking experience.

• 12-speed gearing for precise shifting
• Wide gear range from 9 to 50 teeth
• Lightweight construction at only 375 g
• Combination of aluminum and steel cogs for durability.