11/34 Cassette means:

• A. The smallest cog has 11 teeth.
• B. The largest cog has 34 teeth.
• C. The total teeth on the cassette is 11 plus 34.
• D. Smaller cog has 11 teeth and larger cog has 34 teeth.

Answer: (D)

When you see a cassette marked with two numbers like 11/34, it’s naming the teeth on the ends of the gear range. The first number is the smallest sprocket, and the second number is the largest. So the smallest cog has 11 teeth and the largest cog has 34 teeth. It isn’t about adding them or describing only one end; it’s describing the range of gear sizes available on the cassette. This wide range gives you high-speed capability with the small 11-tooth cog and easier climbing with the large 34-tooth cog.