So I've recently got into building dirt jumps and BMX bikes in general but I see my friends riding these dirt jumpers with from suspension and stuff and don't know anything about them. My question is in the title, I want to know everything there is to know about these things; whats a good brand, how much should they weigh, how to tell what suspensions are good and which are bad, EVERYTHING!! If you don't know or want to explain it all, a website explaining everything works too. Thanks so much. If you have any questions email me at [email protected]