- With the first version, small rocks got stuck between the carbon spring and the body of the pedal, making it impossible to clip in and eventually dislodging the spring
- The second version fixed that by adding a plastic cover over the spring, and also improved the bearing seals (which was also a problem with the first version)
- The third version made the angles on the outside of the pedal less acute, making it harder to damage the pedals in a fall
For example I have bought these bottles https://www.zefal.com/en/bottles/545-magnum.html three times over ten years:
- the first time, the mouthpiece was attached by two plastic prongs. The prongs eventually failed
- The second time I bought them, the mouthpiece was attached by four prongs
- The last time I bought them, the hard plastic mouthpiece was replaced by a more comfortable plastic mouthpiece.
I also bought these pedals three times https://www.lookcycle.com/fr-en/products/pedals/road/race/ke... :
- With the first version, small rocks got stuck between the carbon spring and the body of the pedal, making it impossible to clip in and eventually dislodging the spring
- The second version fixed that by adding a plastic cover over the spring, and also improved the bearing seals (which was also a problem with the first version)
- The third version made the angles on the outside of the pedal less acute, making it harder to damage the pedals in a fall