Good old Stan's Notubes has done it again. Are they the only ones really trying to do new things to make MTB's faster? You could aready build up a set of wheels through them that was stronger and a bit lighter than Crossmax SLR, now they can smoke the Crossmax's . The ZTR Race wheels are only 1210 grams complete which is almost a pound lighter than Crossmax SLR. A pound on a wheelset is a crazy big deal and they are a bit cheaper than Crossmax SLR to boot. These would be a must have for any serious racer. They also have a new road tubeless setup out that I think I might get. Any time I try to run less than 115 PSI in my rear tire I pinch flat. The problem is my bike corners much better at 110 PSI compared to the 120 that I run. I'm due for some new rubber anyway so I think this might be the way to go.