Hey i used to be a sponsored paintball player and we used carbon fiber air tanks that could hold up to 4500psi, which is much more pressure then a BMX er would put on a bike, however every 4 years or so you have to get your tank hydro tested(they over fill it to the point of explosin ,almost)if it failed(exploded) then ur in buying a new $200 CF air tank, Well my point is that Carbon material wise blows steel/chromo steel out of the water for performance ex: if you have ever played paintball and used a steel tank instead of a CF one you will notice the weight difference is like night and day. And when it matters, that extra weight savings could mean the difference between grabbing the flag, or getting bunkered by the noob still using Co2...Thats my 2 cents...Gracias