yeah ive heard some bad things about single tracks on rear wheels, they're pretty much the lightest 24" rim you can get that isnt total rubbish, its perfect for the front and looks pretty cool, but considering maybe an mtx for the back or maybe a spank subrosa, have to look into weight though, when im not racing i spend a lot of time on pump track and bmx tracks, so im looking to stick with 24", and i dont really like the way 26s ride on them anyway.