The FR2 has the same fit as the FRX and FR3 skate but with upgraded components.  The cuff is adjustable in four positions. The top buckle is now metal, and the 45 degree strap is wider.  Most importantly the FR2 has integrated metal plates in the base of the boot for improved stability and energy transfer.

It's available with a 4x80 or 3x110 wheel setup.  Or you can buy the boot only and use your own 165mm frames.