AI quick summary
- 'Clipless' means you clip into the pedal with a cleat on your shoe — the opposite of old toe clips.
- Two-bolt systems (SPD) are walkable and dominate gravel, MTB, and commuting; three-bolt systems (SPD-SL, Look) are lighter and stiffer for road.
- Float (how much your heel can move while clipped in) protects knees — choose by comfort and any knee issues.
/ 01
What 'clipless' actually means
It's a confusing name: 'clipless' pedals are the ones you clip into, with a cleat bolted to the sole of your shoe. They're called clipless because they replaced the old toe clips and straps. Clipping in connects your foot to the pedal for better power transfer, security over bumps, and a more efficient pedal stroke.
/ 02
The main systems
Cleat float varies by model and cleat color — check the specific cleat.
| System | Cleat bolts | Typical use | Walkability |
|---|---|---|---|
| Shimano SPD (2-bolt) | 2 | MTB, gravel, commuting | Good (cleat recessed) |
| Shimano SPD-SL (3-bolt) | 3 | Road | Poor (cleat protrudes) |
| Look Keo (3-bolt) | 3 | Road | Poor |
| Speedplay / Wahoo (4-bolt) | 4 (3 with adapter) | Road | Moderate (walkable cleat) |
/ 03
Road vs off-road cleats
Three-bolt road cleats (SPD-SL, Look) are large and stiff for efficient power transfer, but they protrude from the sole, making walking awkward — fine for pure road riding, painful for cafe stops and any walking. Two-bolt SPD cleats sit recessed in a treaded sole, so you can walk normally, which is why they own gravel, MTB, touring, and commuting.
/ 04
Float and your knees
Float is how many degrees your heel can rotate while still clipped in. More float (5–9°) lets your foot find a natural line and is kinder to knees; zero float locks you in precise and feels direct but punishes a poor cleat angle. If you have any knee sensitivity, start with a cleat that offers float and adjust angles in small increments.
/ 05
Which to choose
Road only and you never walk in your shoes? SPD-SL or Look. Gravel, touring, commuting, or lots of cafe stops? SPD. Want the easiest clipping in (dual-sided, no flipping)? Speedplay. Match the cleat to your shoes — you can't mix a 3-bolt road cleat with a 2-bolt shoe sole without adapters.
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