It should be. Both should be a 3/4 inch axle. You wanting the 200mm rear tyre? If thats the case you'll need to change a few more things also.....

I had an 07 fatboy and i thought it had 25 mm axles. this is the year they changed to metric bearings. Anyone like to confirm?

Your correct Hutch 06 had 3/4 the 07 was 25mm

carnt you replace 25mm with 3/4 bearings in the 17in rim

You are best to physically check the wheel you intend to fit for bearing size. As I have an '07 softail custom rear wheel I'm putting on my '01 Heritage and it has 3/4 inch bearings also. I think '07 was a slap together year for HD. With a mix of left over 3/4" and 25mm bearing used. Probably depending on date of manufacture. As they say in the trades..... Check twice cut once.

Good luck mate. Let us know how you go with it all.

Nah, no slap t'gether, 07 3/4, 08 up 25mm

http://www.hdforums.com.au/Default.aspx?tabid=71&forumid=5&postid=602039&view=topic

Have a look at my thread mate. Probably easier then me going on about it.

Sorry Hydroduck and others for throwing a spanner in the works but It's better to find out sooner than when it's too late.
I could be wrong on this as there are more learned colleagues on here than me.
I remember going to do something with my wheels but stopped due to incompatibility. Maybe Gnoo is right with the two sizes for that year. Surely H-D dealers should know also.
Maybe there was a difference between fatboy wheels as I had and other softail wheels. Dunno folks