Keywin Pedals
Cleat wear

I use Keywin pedals (with the titanium spindle), a very lightweight pedal system from New Zealand. These are innovative pedals in which float is achieved by having the pedal body pivot in the horizontal plane about the spindle. Unlike the vast majority of existing systems, the cleat is fixed with respect to the pedal body. As a result cleat wear, a problem with most systems, is virtually eliminated. And without the constant grinding, both the cleat and pedal body can be made of lightweight plastic instead of (relatively heavy) steel or aluminum. And as a result, the Keywin system is weight-competitive with the lightest systems despite having a large platform. Safety-wise, the Keywin system is much more secure and is much less likely to pull out inadvertantly and cause a crash due to cleat wear.

The above picture shows a brand-new cleat (on the left) weighing 24g and a worn cleat (on the right) weighing just 18g. Note that I have not included the weight of the mounting hardware, i.e. screws and washers. The cleat is from my left shoe, the one I clip out in and out of (and thus wear out the fastest) at traffic lights and other stops. The worn cleat is being replaced because too much material has been abraded away and it has become sloppy and potentially dangerous. However, it has had a remarkable service life of about 2.5 years.