"This bike has a compression ratio of 11:1."

Great, but what does that actually mean?

What do the "11" and the "1" refer to, respectively?

And why does fuel need to be compressed at all?

Tune in to discover:
- Why the fuel needs to be compressed
- Top Dead Center vs. Bottom Dead Center - and how they're relevant to the compression ratio figure

Resources:
- The Dual Wheel Journey blog post - "Compression Ratio Explained and Demystified"