Maybe... maybe not. Look up the specs for the fork that FSR was designed to use and make sure you're not going to horribly undersize or oversize the axle-to-crown. Also you will want to match or bias as appropriate the amount of travel depending on your type of riding. And of course, the other thing you'll have to be concerned with is the headtube length. You'll want to make sure your steerer is long enough to accomodate that plus whatever stack height the stem and headset (and possibly spacers) will add.