Steve is def correct. If you have the old yellow cylinder shape bag you are getting roughly 300lbs. However, the factory sack now is no longer a cylinder and has increased a litttle in length to take up the locker fully. I will pull mine and measure, just to make sure as I have one straight out of an 08 X1.. I am assuming the custom one may be cheaper as you are not paying thre "MC" markup. Don't quote me on this but I think a new from my dealer was around $300 or so.
Last edited by xstarrider; 05-19-2010 at 8:07 AM.