I have a 2013 yz450f and I am loving it so far! I have it all set up for my liking and I'm ready for season to start. I was curious what other people have done as far as oversize tanks go. I am going to be racing two hour harescrambles. I was wondering if the ims 2.4 gallon tank will last me the whole 2 hours. If I'm going to have to fill up with it anyways, then I'm just going to run the stock one. Hopefully someone on here has experience with the ims tank.. Thanks for any info.