[header] How to lighten your bmx bike [title] Analyze your bike. [step] Do you really need all those parts? Some cheap bikes come with unnecessary parts that can all be removed. Even though these parts could weigh next to nothing, in total they all add up. 
Be sure you know what the different parts are and what they do when analyzing the bike--never remove anything vital. [substeps] Some unnecessary parts include: chain guards, reflectors, lights, detanglers, brakes and possible stunt pegs.