get k-rads. yes they arnt what you were looking at but there dirt cheep and there grippy and they come in teh write size either get 2.3 if you riding street an 2.6 if your riding dirt.
check out schwalbe table tops. they are 2.25 but are wider than a maxxis 2.2 and they only weigh 590 grams. it would save a whole pound off of your bike. i love mine
To throw in my opinion, the Kenda Small Block Eights have worked really well for me on my DJ. The have just a little tread so the hook up much better than a smoother tire on dirt and still roll silly fast. Run them at 40-60 psi and you're golden.
K-rads are good for street they stick good to pavment and concrete in skateparks but once you get into some drier dirt they are pretty slick tend to slide alot, but i still ride them just a bit of a learning curve on dirt