All 2st Front Axle, Allen size?

I went to take off my front wheel last night and I don't have a large enough Allen wrench to remove the axle nut. Anyone know what size that thing is? (2008 WR-250).

12mm

Take a 12mm bolt and a pair of vice grips and if that doesn't work put two nuts on the bolt and lock them together, then take a wrench and turn one end. Sometimes that nut is not very tight.

Great, picked one up at Auto Zone today at lunch... Thanks Guys !

That was a bad move on Husky's part. It requires a special HUGE allen wrench. It should have been the same or smaller than the rear axle nut. It really weighs down your fanny pack.

Vinduro, I agree with you. Bad move on Husky's part. I could only find a 1/2" drive socket so there is no way I'm hauling a 1/2 drive ratchet in my fanny pack. I may need to special order one loose 12mm Allen Key just for my trail pack.

Motosportz also makes a replacement
http://www.motosportz.com/HVA-SS/HVA-SS-Home.htm#Convenience

This is the real solution, get the wrench right below the axle nut with the nut, then you carry one tool for the front and rear axle nuts !

Or make one; just cut 35 mm off your 12mm allen wrench with a metal chopsaw.
Get your machinist buddy to spin it and cut two grooves all the way around it; one at 5mm and one at 25mm. Put a circlip/external retaining clip on the 5mm groove stuff it through the axle nut leaving the 10mm bit sticking out and slap the 2nd circlip on it. This leaves a 10mm long 12mm 'nut' that is the same size as your rim locks and tube nuts. All you need it a 12 mm wrench for everything.

Another good option.

I just cut off the allen wrench and use it with a 12mm socket. Doesn't take up much room at all in the tool bag.

You could cut off the allen wrench and weld it into a 12mm box end wrench.

Mine didn't come with a wrench at all. I had to go to 5 autoparts stores before I found one.