I want to know when it comes to racing which is better? I have a 24 inch aluminium bmx frame and want to know if chromoly frames are faster? Also before buying parts for my bike should I go all aluminum like the bars and forks? Also which is faster the aluminum or the chromoly frame?The nuts and bolts of aluminum vs chromoly is modern aluminum is stronger than Chrome at the same weight. However, aluminum is easier and cheaper to draw thin, so mfg tend to take advantage of that characteristic to make a cheaper and frame. Weight, unfortunately, is a selling point that has totally destroyed the production of durable bike frames, but they are out there. While I am not a connoisseur of BMX frames, I would suggest looking for non-butted aluminum frames.I\'m not a racer, so don\'t quote me on anything. The metal doesn\'t make you faster. The difference between aluminum and chromoly is strength and weight. Aluminum is much weaker than chromoly, but also much lighter. I believe aluminum parts are generally used for racers under 110 lbs, but, again, I\'m not a racer so I\'m not exactly sure.There are no 24 inch BMX frames.difficult matter. look into into the search engines. that might help!problematic problem. research in yahoo. this will help!Other related question