That is what I thought. I already have the stem so I will need a threadless headset. And the steerer tube is really long so that will work fine.
Another question: The rigid fork I am looking at has a axle to crown measurement of 395mm. I measured the Q5 and it measures 410mm. I measured from the center of the axle to the base of the steerer tube.
Will this cause a problem in handling? The fork rigid fork description indicates it is "suspension corrected" so I assume that means it is allowing for the bit of sag that a suspension fork has when I am on the bike.