Weight

Bonded carbon parts are typically lighter weight than aluminum. Carbon cranksets tend to weigh between 700 and 800 grams (24 to 28 ounces). That is less than two pounds for both crank arms and the full set of chainrings. Aluminum cranksets, however, tend to weigh between 900 and 1000 grams (about two pounds). While the difference between 28 ounces and 35 ounces might not sound like very much, that is a 20% weight difference. Every time you pedal, you will be using 20% more energy. On a long ride or up a steep hill, that difference could quickly become exhausting.

Durability

Where aluminum falls behind bonded carbon in weight, it is the definite winner when it comes to durability.

carbon bicycle handlebar

carbon bicycle bottle cage

carbon clear coating