Which fork is better for my bike i ride aggresivley on the street i am wondering which would be better between a carbon fork or aluminum fork
All forks have to meet certain standards for strength, but if you ride aggressively, you can break anything. No idea what sort of bicycle you have, so recommending a fork really isn't possible. Ask a vague question, get a vague answer
It's as much - if not more - about the design and fabrication than it is about the material. A good fork out of any sensible material will outperform a poor fork out of any sensible material. For aggressive riding, many people prefer steel forks, as good steel forks tend to be most tolerant to abuse. Carbon fiber forks often have low weight as a selling point, which tends to make them less robust. By the time you've added enough material to create a survive-anything carbon fork, it'll weigh close to what an aluminium fork would do, which will hurt its sales. For the same amount of money, I'd probably go with an Al fork over a CF fork. Since Al in material and production is cheaper than CF, I'd hope that it would free up some extra cash for quality in design and manufacture. If I wanted the same level of quality I'd expect to pay maybe 25% more for a CF fork than an Al fork. Or more, it's been a while since I checked prices.