Its a good question. Yeah I'll admit that having a bike that is light does make spins faster and riding easier but do you really need a sub 20 lb bike? Well the answer is no. I also ride a DJ mountain bike that weighs in at about 35 lbs. Heavy? No. its actually very light for a mountain bike. Now lets think about the average bmx bike. If you went to ever person that has a bmx bike my guess at an average weight would be about 28lbs. Is that heavy? Well no. Think about it. 28 lbs. What else weighs that much? Your dog, a branch from a tree...........well its not all that heavy. If you are a healthy individual you should be able to pick it up with no issues. Now look back about 5 years ago at the "light" frames on the market. They all were about 6.6-7 lbs. Now anything sub 10 lbs is easy to pick up right? Yes. My point is. If you are seriously worried about ounces and grams on your bike than you need to take the money you were going to spend on that Ti spindal or those hollow stem bolts and go get a gym membership. Anything under 30 lbs is not heavy. So quit your bitching and moaning about how something weighs in at 15 ounces or that frame is over 4.5 lbs. Because the truth is you need to eat some damn good food and do a lot of push ups. Weak little bastards.