Hey,
I’m planning on buying a new BMX frame for a bike i already have. Which measurements do i need to look out for which might not fit my current parts.
Thanks.

Get something with a Spanish bottom bracket. As opposed to Euro and American (Standard) bottom brackets, they are a lot simpler and smoother. Also, look for stress cracks in the frame. Get something about 20.5" or 20.6". The Fit Hawk is on sale on danscomp.com for $160 and it weighs in at 5 lbs flat. http://www.danscomp.com/211085.php?cat=FRAMESFSD Also, here’s a sizing chart for the bottom brackets http://www.danscomp.com/serve.php?serve=products/charts&html=bearingchart.htm Also, get something with an integrated headset. http://www.danscomp.com/serve.php?serve=products/charts&html=headsetchart.htm You’ll have buy new bearings for the bottom bracket and headset, but it’s so worth it! Everything else should fit fine, but you will HAVE to make your chain shorter, no doubt.