i did the weight the same way on one of my bikes. a bmx. i looked at all the manufacturers weight listings of the parts i put on, and i ended up coming out to 40 pounds. 42 with pegs (kink). the bike shop i go to was like "this is the heaviest bike ever. atleast for a 20" bmx." they through it on the scale, it ended up being sup 40. i forget what exactly. i think 38 pounds