I'm doing the disk upgrade on my blaster, I bought the spendles and hubs off a Warrior part on Craigs list, he had already sold the hydros and cailpers. A friend of mine is parting out the 400ex so of course I got the rear shock, so I figured I would see how close the front brakes would fit since they were there. The 400ex Cailpers bolted up perfect! I'm in the midway part of complete rebuild, when I get to that part I will post some pics!